diff --git a/.vscode/launch.json b/.vscode/launch.json
new file mode 100644
index 00000000..6afdcc7d
--- /dev/null
+++ b/.vscode/launch.json
@@ -0,0 +1,11 @@
+{
+  "version": "0.1.0",
+  "configurations": [
+    {
+      "name": "Debug",
+      "type": "chrome",
+      "request": "launch",
+      "file": "${workspaceFolder}/index.html"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/index.css b/index.css
index 7e4ba024..ba0f6bf1 100644
--- a/index.css
+++ b/index.css
@@ -1189,7 +1189,8 @@ div.states:hover {
 }
 
 div.states > *,
-div.states sup {
+div.states sup,
+div.totalLine > div {
 	display: inline-block;
 }
 
@@ -1415,6 +1416,7 @@ div.states.Self {
 	border-color: #858b8e;
 	background-image: linear-gradient(to right, #f2f2f2 0%, #b0c6d9 100%);
 	font-style: italic;
+	font-weight: bold;
 	margin-bottom: .2em;
 	cursor: default !important;
 }
@@ -1437,7 +1439,8 @@ rect.fillRect {
 	stroke-width: 2;
 }
 
-#militaryHeader > div {
+#militaryHeader > div,
+#regimentsHeader > div {
 	width: 5.2em;
 }
 
@@ -1446,7 +1449,8 @@ rect.fillRect {
 }
 
 #militaryBody div.states > input,
-#militaryBody div.states > div {
+#militaryBody div.states > div,
+#regimentsBody div.states > div {
 	width: 5em;
 }
 
diff --git a/index.html b/index.html
index c9676d1d..3b5fb392 100644
--- a/index.html
+++ b/index.html
@@ -1960,7 +1960,7 @@
         </div>
         <div>
           <i data-locked=0 id="lock_temperaturePole" class="icon-lock-open"></i>
-          <label data-tip="Set temperature at poles">
+          <label data-tip="Set temperature near poles">
             <i>Poles:</i>
             <input id="temperaturePoleInput" data-stored="temperaturePole" type="number" min="-30" max="30">°C =
             <span id="temperaturePoleF"></span>°F
@@ -2832,6 +2832,8 @@
         <div style="left:12.4em" data-tip="Click to sort by diplomatical relations" class="sortable alphabetically" data-sortby="relations">Relations&nbsp;</div>
       </div>
 
+      <div id="diplomacyBodySection" class="table"></div>
+
       <div id="diplomacySelect">
         <div data-tip="Ally means states formed a defensive pact and will protect each other in case of third party aggression">Ally</div>
         <div data-tip="State is friendly to anouther state when they share some common interests">Friendly</div>
@@ -2844,8 +2846,6 @@
         <div data-tip="Suzerain is a state having some control over its vassals">Suzerain</div>
       </div>
 
-      <div id="diplomacyBodySection" class="table"></div>
-
       <div id="diplomacyBottom" style="margin-top: .1em">
         <button id="diplomacyEditorRefresh" data-tip="Refresh the Editor" class="icon-cw"></button>
         <button id="diplomacyEditStyle" data-tip="Edit states (including diplomacy view) style in Style Editor" class="icon-adjust"></button>
@@ -3280,19 +3280,39 @@
 
       <div id="militaryFooter" class="totalLine">
         <div data-tip="States number" style="margin-left: 4px">States:&nbsp;<span id="militaryFooterStates">0</span></div>
+        <div data-tip="Total military forces" style="margin-left: 14px">Total forces:&nbsp;<span id="militaryFooterForcesTotal">0</span></div>
         <div data-tip="Average military forces per state" style="margin-left: 14px">Average forces:&nbsp;<span id="militaryFooterForces">0</span></div>
         <div data-tip="Average forces rate per state" style="margin-left: 14px">Average rate:&nbsp;<span id="militaryFooterRate">0%</span></div>
         <div data-tip="Average War Alert" style="margin-left: 14px">Average alert:&nbsp;<span id="militaryFooterAlert">0</span></div>
       </div>
 
       <div id="militaryBottom">
-        <button id="militaryOverviewRefresh" data-tip="Refresh the Editor" class="icon-cw"></button>
+        <button id="militaryOverviewRefresh" data-tip="Refresh the overview screen" class="icon-cw"></button>
         <button id="militaryOptionsButton" data-tip="Edit Military units" class="icon-cog"></button>
+        <button id="militaryPercentage" data-tip="Toggle percentage / absolute values views" class="icon-percent"></button>
         <button id="militaryOverviewRecalculate" data-tip="Recalculate military forces based on current options" class="icon-retweet"></button>
         <button id="militaryExport" data-tip="Save military-related data as a text file (.csv)" class="icon-download"></button>
       </div>
     </div>
 
+    <div id="regimentsOverview" class="dialog stable" style="display: none">
+      <div id="regimentsHeader" class="header">
+        <div data-tip="State name. Click to sort" style="left:1.8em; width: 9em" class="sortable alphabetically" data-sortby="state">State&nbsp;</div>
+        <div data-tip="Regiment emblem and name. Click to sort by name" style="width: 12em" class="sortable alphabetically" data-sortby="name">Name&nbsp;</div>
+        <div data-tip="Total military personnel (not considering crew). Click to sort" style="margin-left: .8em" id="regimentsTotal" class="sortable icon-sort-number-down" data-sortby="total">Total&nbsp;</div>
+      </div>
+
+      <div id="regimentsBody" class="table" data-type="absolute"></div>
+
+      <div id="regimentsBottom">
+        <button id="regimentsOverviewRefresh" data-tip="Refresh the overview screen" class="icon-cw"></button>
+        <button id="regimentsPercentage" data-tip="Toggle percentage / absolute values views" class="icon-percent"></button>
+        <button id="regimentsAddNew" data-tip="Add new Regiment" class="icon-user-plus"></button>
+        <button id="regimentsExport" data-tip="Save military-related data as a text file (.csv)" class="icon-download"></button>
+        <div data-tip="Select state" style="display:inline-block"><span>State: </span><select id="regimentsFilter"></select></div>
+      </div>
+    </div>
+
     <div id="militaryOptions" class="dialog stable" style="display: none">
       <table id="militaryOptionsTable">
         <thead>
@@ -3519,6 +3539,7 @@
   <script defer src="modules/ui/burgs-overview.js"></script>
   <script defer src="modules/ui/rivers-overview.js"></script>
   <script defer src="modules/ui/military-overview.js"></script>
+  <script defer src="modules/ui/regiments-overview.js"></script>
   <script defer src="modules/ui/regiment-editor.js"></script>
   <script defer src="modules/ui/editors.js"></script>
   <script defer src="modules/ui/3d.js"></script>
diff --git a/main.js b/main.js
index 49f345d5..9c247a75 100644
--- a/main.js
+++ b/main.js
@@ -308,9 +308,8 @@ function applyDefaultBiomesSystem() {
   const habitability = [0,4,10,22,30,50,100,80,90,12,4,0,12];
   const iconsDensity = [0,3,2,120,120,120,120,150,150,100,5,0,150];
   const icons = [{},{dune:3, cactus:6, deadTree:1},{dune:9, deadTree:1},{acacia:1, grass:9},{grass:1},{acacia:8, palm:1},{deciduous:1},{acacia:5, palm:3, deciduous:1, swamp:1},{deciduous:6, swamp:1},{conifer:1},{grass:1},{},{swamp:1}];
-  const cost = [10,200,150,60,50,70,70,80,90,80,100,255,150]; // biome movement cost
-  const biomesMartix = [
-    // hot ↔ cold; dry ↕ wet
+  const cost = [10,200,150,60,50,70,70,80,90,200,1000,5000,150]; // biome movement cost
+  const biomesMartix = [ // hot ↔ cold; dry ↕ wet
     new Uint8Array([1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2]),
     new Uint8Array([3,3,3,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,9,9,9,9,9,10,10]),
     new Uint8Array([5,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,9,9,9,9,9,10,10,10]),
@@ -742,14 +741,14 @@ function calculateTemperatures() {
   const tEq = +temperatureEquatorInput.value;
   const tPole = +temperaturePoleInput.value;
   const tDelta = tEq - tPole;
+  const int = d3.easePolyInOut.exponent(.5); // interpolation function
 
   d3.range(0, cells.i.length, grid.cellsX).forEach(function(r) {
     const y = grid.points[r][1];
-    const lat = Math.abs(mapCoordinates.latN - y / graphHeight * mapCoordinates.latT);
-    const initTemp = tEq - lat / 90 * tDelta;
+    const lat = Math.abs(mapCoordinates.latN - y / graphHeight * mapCoordinates.latT); // [0; 90]
+    const initTemp = tEq - int(lat / 90) * tDelta;
     for (let i = r; i < r+grid.cellsX; i++) {
-      const temp = initTemp - convertToFriendly(cells.h[i]);
-      cells.temp[i] = Math.max(Math.min(temp, 127), -128);
+      cells.temp[i] = Math.max(Math.min(initTemp - convertToFriendly(cells.h[i]), 127), -128);
     }
   });
 
@@ -1036,7 +1035,7 @@ function drawCoastline() {
 // Re-mark features (ocean, lakes, islands)
 function reMarkFeatures() {
   console.time("reMarkFeatures");
-  const cells = pack.cells, features = pack.features = [0];
+  const cells = pack.cells, features = pack.features = [0], temp = grid.cells.temp;
   cells.f = new Uint16Array(cells.i.length); // cell feature number
   cells.t = new Int16Array(cells.i.length); // cell type: 1 = land along coast; -1 = water along coast;
   cells.haven = cells.i.length < 65535 ? new Uint16Array(cells.i.length) : new Uint32Array(cells.i.length);// cell haven (opposite water cell);
@@ -1046,6 +1045,7 @@ function reMarkFeatures() {
     const start = queue[0]; // first cell
     cells.f[start] = i; // assign feature number
     const land = cells.h[start] >= 20;
+    //const frozen = !land && temp[cells.g[start]] < -5; // check if water is frozen
     let border = false; // true if feature touches map border
     let cellNumber = 1; // to count cells number in a feature
 
@@ -1063,9 +1063,10 @@ function reMarkFeatures() {
           if (!cells.t[e] && cells.t[q] === 1) cells.t[e] = 2;
           else if (!cells.t[q] && cells.t[e] === 1) cells.t[q] = 2;
         }
-        if (land === eLand && cells.f[e] === 0) {
-          cells.f[e] = i;
+        if (!cells.f[e] && land === eLand) {
+          //if (!land && frozen !== temp[cells.g[e]] < -5) return;
           queue.push(e);
+          cells.f[e] = i;
           cellNumber++;
         }
       });
@@ -1073,15 +1074,14 @@ function reMarkFeatures() {
 
     const type = land ? "island" : border ? "ocean" : "lake";
     let group;
-    if (type === "lake") group = defineLakeGroup(start, cellNumber);
-    else if (type === "ocean") group = "ocean";
+    if (type === "lake") group = defineLakeGroup(start, cellNumber, temp[cells.g[start]]);
+    else if (type === "ocean") group = defineOceanGroup(cellNumber);
     else if (type === "island") group = defineIslandGroup(start, cellNumber);
     features.push({i, land, border, type, cells: cellNumber, firstCell: start, group, ports:0});
     queue[0] = cells.f.findIndex(f => !f); // find unmarked cell
   }
 
-  function defineLakeGroup(cell, number) {
-    const temp = grid.cells.temp[cells.g[cell]];
+  function defineLakeGroup(cell, number, temp) {
     if (temp > 24) return "salt";
     if (temp < -3) return "frozen";
     const height = d3.max(cells.c[cell].map(c => cells.h[c]));
@@ -1090,6 +1090,12 @@ function reMarkFeatures() {
     return "freshwater";
   }
 
+  function defineOceanGroup(number) {
+    if (number > grid.cells.i.length / 25) return "ocean";
+    if (number > grid.cells.i.length / 100) return "sea";
+    return "gulf";
+  }
+
   function defineIslandGroup(cell, number) {
     if (cell && features[cells.f[cell-1]].type === "lake") return "lake_island";
     if (number > grid.cells.i.length / 10) return "continent";
@@ -1124,12 +1130,13 @@ function defineBiomes() {
 
   for (const i of cells.i) {
     if (f[cells.f[i]].group === "freshwater") cells.h[i] = 19; // de-elevate lakes
-    if (cells.h[i] < 20) continue; // water cells have biome 0
+    const temp = grid.cells.temp[cells.g[i]]; // temperature
+
+    if (cells.h[i] < 20 && temp > -6) continue; // liquid water cells have biome 0
     let moist = grid.cells.prec[cells.g[i]];
     if (cells.r[i]) moist += Math.max(cells.fl[i] / 20, 2);
     const n = cells.c[i].filter(isLand).map(c => grid.cells.prec[cells.g[c]]).concat([moist]);
     moist = rn(4 + d3.mean(n));
-    const temp = grid.cells.temp[cells.g[i]]; // flux from precipitation
     cells.biome[i] = getBiomeId(moist, temp, cells.h[i]);
   }
 
@@ -1138,6 +1145,7 @@ function defineBiomes() {
 
 function getBiomeId(moisture, temperature, height) {
   if (temperature < -5) return 11; // permafrost biome
+  if (height < 20) return 0; // liquid water cells have marine biome
   if (moisture > 40 && height < 25 || moisture > 24 && height > 24) return 12; // wetland biome
   const m = Math.min(moisture / 5 | 0, 4); // moisture band from 0 to 4
   const t = Math.min(Math.max(20 - temperature, 0), 25); // temparature band from 0 to 25
diff --git a/modules/burgs-and-states.js b/modules/burgs-and-states.js
index 34fa3bee..1b86950d 100644
--- a/modules/burgs-and-states.js
+++ b/modules/burgs-and-states.js
@@ -137,22 +137,24 @@
     }
   }
 
-  // define burg coordinates and define details
+  // define burg coordinates, port status and define details
   const specifyBurgs = function() {
     console.time("specifyBurgs");
-    const cells = pack.cells, vertices = pack.vertices;
+    const cells = pack.cells, vertices = pack.vertices, features = pack.features;
+    checkAccessibility();
 
     for (const b of pack.burgs) {
       if (!b.i) continue;
       const i = b.cell;
 
       // asign port status
-      if (cells.haven[i]) {
-        const f = cells.f[cells.haven[i]]; // water body id
+      const haven = cells.haven[i];
+      if (haven && cells.biome[haven] === 0) {
+        const f = cells.f[haven]; // water body id
         // port is a capital with any harbor OR town with good harbor
-        const port = pack.features[f].cells > 1 && ((b.capital && cells.harbor[i]) || cells.harbor[i] === 1);
+        const port = features[f].cells > 1 && ((b.capital && cells.harbor[i]) || cells.harbor[i] === 1);
         b.port = port ? f : 0; // port is defined by water body id it lays on
-        if (port) {pack.features[f].ports += 1; pack.features[b.feature].ports += 1;}
+        if (port) {features[f].ports += 1; features[b.feature].ports += 1;}
       } else b.port = 0;
 
       // define burg population (keep urbanization at about 10% rate)
@@ -178,12 +180,43 @@
     }
 
     // de-assign port status if it's the only one on feature
-    for (const f of pack.features) {
+    for (const f of features) {
       if (!f.i || f.land || f.ports !== 1) continue;
       const port = pack.burgs.find(b => b.port === f.i);
       port.port = 0;
       f.port = 0;
-      pack.features[port.feature].ports -= 1;
+      features[port.feature].ports -= 1;
+    }
+
+    // separate arctic seas for correct searoutes generation
+    function checkAccessibility() {
+      const oceanCells = cells.i.filter(i => cells.h[i] < 20 && features[cells.f[i]].type === "ocean");
+      const marked = [];
+      let firstCell = oceanCells.find(i => !marked[i]);
+
+      while (firstCell !== undefined) {
+        const queue = [firstCell];
+        const f = features[cells.f[firstCell]]; // old feature
+        const i = last(features).i+1; // new feature id to assign
+        const biome = cells.biome[firstCell];
+        marked[firstCell] = 1;
+        let cellNumber = 1;
+
+        while (queue.length) {
+          for (const c of cells.c[queue.pop()]) {
+            if (cells.biome[c] !== biome || cells.h[c] >= 20) continue;
+            if (marked[c]) continue;
+            queue.push(c);
+            cells.f[c] = i;
+            marked[c] = 1;
+            cellNumber++;
+          }
+        }
+
+        const group = biome ? "frozen " + f.group : f.group;
+        features.push({i, parent:f.i, land:false, border:true, type:"ocean", cells: cellNumber, firstCell, group, ports:0});
+        firstCell = oceanCells.find(i => !marked[i]);
+      }
     }
 
     console.timeEnd("specifyBurgs");
@@ -274,16 +307,19 @@
     while (queue.length) {
       const next = queue.dequeue(), n = next.e, p = next.p, s = next.s, b = next.b;
       const type = states[s].type;
+      const culture = states[s].culture;
 
       cells.c[n].forEach(function(e) {
         if (cells.state[e] && e === states[cells.state[e]].center) return; // do not overwrite capital cells
 
-        const cultureCost = states[s].culture === cells.culture[e] ? -9 : 700;
+        const cultureCost = culture === cells.culture[e] ? -9 : 100;
+        const populationCost = cells.s[e] ? 20 - cells.s[e] : 2500;
         const biomeCost = getBiomeCost(b, cells.biome[e], type);
         const heightCost = getHeightCost(pack.features[cells.f[e]], cells.h[e], type);
         const riverCost = getRiverCost(cells.r[e], e, type);
         const typeCost = getTypeCost(cells.t[e], type);
-        const totalCost = p + (10 + cultureCost + biomeCost + heightCost + riverCost + typeCost) / states[s].expansionism;
+        const cellCost = Math.max(cultureCost + populationCost + biomeCost + heightCost + riverCost + typeCost, 0);
+        const totalCost = p + 10 + cellCost / states[s].expansionism;
 
         if (totalCost > neutral) return;
 
@@ -325,7 +361,7 @@
     function getTypeCost(t, type) {
       if (t === 1) return type === "Naval" || type === "Lake" ? 0 : type === "Nomadic" ? 60 : 20; // penalty for coastline
       if (t === 2) return type === "Naval" || type === "Nomadic" ? 30 : 0; // low penalty for land level 2 for Navals and nomads
-      if (t !== -1) return type === "Naval" || type === "Lake" ? 100 : 0;  // penalty for mainland for navals
+      if (t !== -1) return type === "Naval" || type === "Lake" ? 100 : 0; // penalty for mainland for navals
       return 0;
     }
 
diff --git a/modules/military-generator.js b/modules/military-generator.js
index 99b91bad..8063d17d 100644
--- a/modules/military-generator.js
+++ b/modules/military-generator.js
@@ -153,6 +153,7 @@
     });
 
     function createRegiments(nodes, s) {
+      if (!nodes.length) return [];
       nodes.sort((a,b) => a.a - b.a);
       const tree = d3.quadtree(nodes, d => d.x, d => d.y);
       nodes.forEach(n => {
diff --git a/modules/names-generator.js b/modules/names-generator.js
index 2a8c66c0..84b3a860 100644
--- a/modules/names-generator.js
+++ b/modules/names-generator.js
@@ -76,6 +76,9 @@
     }
 
     // parse word to get a final name
+    const l = last(w); // last letter
+    if (l === "'" || l === " ") w = w.slice(0,-1); // not allow apostrophe and space at the end
+
     let name = [...w].reduce(function(r, c, i, d) {
       if (c === d[i+1] && !dupl.includes(c)) return r; // duplication is not allowed
       if (!r.length) return c.toUpperCase();
@@ -83,8 +86,7 @@
       if (r.slice(-1) === " ") return r + c.toUpperCase(); // capitalize letter after space
       if (r.slice(-1) === "-") return r + c.toUpperCase(); // capitalize letter after hyphen
       if (c === "a" && d[i+1] === "e") return r; // "ae" => "e"
-      if (c === " " && i+1 === d.length) return r;
-      if (i+2 < d.length && !vowel(c) && !vowel(d[i+1]) && !vowel(d[i+2])) return r; // remove consonant before 2 consonants
+      if (i+1 < d.length && !vowel(c) && !vowel(d[i-1]) && !vowel(d[i+1])) return r; // remove consonant between 2 consonants
       if (i+2 < d.length && c === d[i+1] && c === d[i+2]) return r; // remove tree same letters in a row
       return r + c;
     }, "");
@@ -96,6 +98,7 @@
       console.error("Name is too short! Random name to be selected");
       name = ra(nameBases[base].b.split(","));
     }
+
     return name;
   }
 
@@ -115,8 +118,7 @@
   // generate short name for base
   const getBaseShort = function(base) {
     if (nameBases[base] === undefined) {
-      tip(`Namebase for culture ${pack.cultures[culture].name} does not exist.
-        Please upload custom namebases of change the base in Cultures Editor`, false, "error");
+      tip(`Namebase ${base} does not exist. Please upload custom namebases of change the base in Cultures Editor`, false, "error");
       base = 1;
     }
     const min = nameBases[base].min-1;
diff --git a/modules/routes-generator.js b/modules/routes-generator.js
index 816c3a6f..e331ce8b 100644
--- a/modules/routes-generator.js
+++ b/modules/routes-generator.js
@@ -64,43 +64,49 @@
     const cells = pack.cells, allPorts = pack.burgs.filter(b => b.port > 0 && !b.removed);
     if (allPorts.length < 2) return [];
     const bodies = new Set(allPorts.map(b => b.port)); // features with ports
-    let from = [], exit = null, path = [], paths = []; // array to store path segments
+    let paths = []; // array to store path segments
 
     bodies.forEach(function(f) {
       const ports = allPorts.filter(b => b.port === f);
       if (ports.length < 2) return;
       const first = ports[0].cell;
+      const farthest = ports[d3.scan(ports, (a, b) => ((b.y - ports[0].y) ** 2 + (b.x - ports[0].x) ** 2) - ((a.y - ports[0].y) ** 2 + (a.x - ports[0].x) ** 2))].cell;
 
       // directly connect first port with the farthest one on the same island to remove gap
-      if (pack.features[f].type !== "lake") {
+      void function() {
+        if (pack.features[f].type === "lake") return;
         const portsOnIsland = ports.filter(b => cells.f[b.cell] === cells.f[first]);
-        if (portsOnIsland.length > 3) {
-          const opposite = ports[d3.scan(portsOnIsland, (a, b) => ((b.y - ports[0].y) ** 2 + (b.x - ports[0].x) ** 2) - ((a.y - ports[0].y) ** 2 + (a.x - ports[0].x) ** 2))].cell;
-          //debug.append("circle").attr("r", 1).attr("fill", "blue").attr("cx", pack.cells.p[first][0]).attr("cy", pack.cells.p[first][1])
-          //debug.append("circle").attr("r", 1).attr("fill", "green").attr("cx", pack.cells.p[opposite][0]).attr("cy", pack.cells.p[opposite][1])
-          [from, exit] = findOceanPath(opposite, first);
-          from[first] = cells.haven[first];
-          path = restorePath(opposite, first, "ocean", from);
-          paths = paths.concat(path);
-        }
-      }
+        if (portsOnIsland.length < 4) return;
+        const opposite = ports[d3.scan(portsOnIsland, (a, b) => ((b.y - ports[0].y) ** 2 + (b.x - ports[0].x) ** 2) - ((a.y - ports[0].y) ** 2 + (a.x - ports[0].x) ** 2))].cell;
+        //debug.append("circle").attr("cx", pack.cells.p[opposite][0]).attr("cy", pack.cells.p[opposite][1]).attr("r", 1);
+        //debug.append("circle").attr("cx", pack.cells.p[first][0]).attr("cy", pack.cells.p[first][1]).attr("fill", "red").attr("r", 1);
+        const [from, exit, passable] = findOceanPath(opposite, first);
+        if (!passable) return;
+        from[first] = cells.haven[first];
+        const path = restorePath(opposite, first, "ocean", from);
+        paths = paths.concat(path);
+      }()
 
       // directly connect first port with the farthest one
-      const farthest = ports[d3.scan(ports, (a, b) => ((b.y - ports[0].y) ** 2 + (b.x - ports[0].x) ** 2) - ((a.y - ports[0].y) ** 2 + (a.x - ports[0].x) ** 2))].cell;
-      [from, exit] = findOceanPath(farthest, first);
-      from[first] = cells.haven[first];
-      path = restorePath(farthest, first, "ocean", from);
-      paths = paths.concat(path);
+      void function() {
+        const [from, exit, passable] = findOceanPath(farthest, first);
+        if (!passable) return;
+        from[first] = cells.haven[first];
+        const path = restorePath(farthest, first, "ocean", from);
+        paths = paths.concat(path);
+      }()
 
       // indirectly connect first port with all other ports
-      if (ports.length < 3) return;
-      for (const p of ports) {
-        if (p.cell === first || p.cell === farthest) continue;
-        [from, exit] = findOceanPath(p.cell, first, true);
-        //from[exit] = cells.haven[exit];
-        const path = restorePath(p.cell, exit, "ocean", from);
-        paths = paths.concat(path);
-      }
+      void function() {
+        if (ports.length < 3) return;
+        for (const p of ports) {
+          if (p.cell === first || p.cell === farthest) continue;
+          const [from, exit, passable] = findOceanPath(p.cell, first, true);
+          if (!passable) continue;
+          const path = restorePath(p.cell, exit, "ocean", from);
+          paths = paths.concat(path);
+        }
+      }()
 
     });
 
@@ -173,9 +179,11 @@
       for (const c of cells.c[n]) {
         if (cells.h[c] < 20) continue; // ignore water cells
         const stateChangeCost = cells.state && cells.state[c] !== cells.state[n] ? 400 : 0; // trails tend to lay within the same state
-        const habitedCost = Math.max(100 - biomesData.habitability[cells.biome[c]], 0); // routes tend to lay within populated areas
+        const habitability = biomesData.habitability[cells.biome[c]];
+        const habitedCost = habitability ? Math.max(100 - habitability, 0) : 400; // routes tend to lay within populated areas
         const heightChangeCost = Math.abs(cells.h[c] - cells.h[n]) * 10; // routes tend to avoid elevation changes
-        const cellCoast = 10 + stateChangeCost + habitedCost + heightChangeCost;
+        const heightCost = cells.h[c] > 80 ? cells.h[c] : 0; // routes tend to avoid mountainous areas
+        const cellCoast = 10 + stateChangeCost + habitedCost + heightChangeCost + heightCost;
         const totalCost = p + (cells.road[c] || cells.burg[c] ? cellCoast / 3 : cellCoast);
 
         if (from[c] || totalCost >= cost[c]) continue;
@@ -234,22 +242,21 @@
 
     while (queue.length) {
       const next = queue.dequeue(), n = next.e, p = next.p;
-      if (toRoute && n !== start && cells.road[n]) return [from, n];
+      if (toRoute && n !== start && cells.road[n]) return [from, n, true];
 
       for (const c of cells.c[n]) {
+        if (c === exit) {from[c] = n; return [from, exit, true];}
         if (cells.h[c] >= 20) continue; // ignore land cells
         const dist2 = (cells.p[c][1] - cells.p[n][1]) ** 2 + (cells.p[c][0] - cells.p[n][0]) ** 2;
         const totalCost = p + (cells.road[c] ? 1 + dist2 / 2 : dist2 + (cells.t[c] ? 1 : 100));
 
         if (from[c] || totalCost >= cost[c]) continue;
-        from[c] = n;
-        if (c === exit) return [from, exit];
-        cost[c] = totalCost;
+        from[c] = n, cost[c] = totalCost;
         queue.queue({e: c, p: totalCost});
       }
 
     }
-    return [from, exit];
+    return [from, exit, false];
   }
 
 })));
\ No newline at end of file
diff --git a/modules/ui/diplomacy-editor.js b/modules/ui/diplomacy-editor.js
index 69df11d8..4a109089 100644
--- a/modules/ui/diplomacy-editor.js
+++ b/modules/ui/diplomacy-editor.js
@@ -68,6 +68,7 @@ function editDiplomacy() {
       const tipChange = `${tip}. Click to change relations to ${selName}`;
 
       lines += `<div class="states" data-id=${s.i} data-name="${s.fullName}" data-relations="${relation}">
+        <span data-tip="${tipSelect}" class="icon-right-open"></span>
         <div data-tip="${tipSelect}" style="width:12em">${s.fullName}</div>
         <svg data-tip="${tipChange}" width=".9em" height=".9em" style="margin-bottom:-1px" class="changeRelations">
           <rect x="0" y="0" width="100%" height="100%" fill="${color}" class="fillRect pointer" style="pointer-events: none"></rect>
@@ -91,30 +92,20 @@ function editDiplomacy() {
     if (!layerIsOn("toggleStates")) return;
     const state = +event.target.dataset.id;
     if (customization || !state) return;
-    const path = regions.select("#state"+state).attr("d");
-    debug.append("path").attr("class", "highlight").attr("d", path)
+    const d = regions.select("#state"+state).attr("d");
+
+    const path = debug.append("path").attr("class", "highlight").attr("d", d)
       .attr("fill", "none").attr("stroke", "red").attr("stroke-width", 1).attr("opacity", 1)
-      .attr("filter", "url(#blur1)").call(transition);
-  }
+      .attr("filter", "url(#blur1)");
 
-  function transition(path) {
-    const duration = (path.node().getTotalLength() + 5000) / 2;
-    path.transition().duration(duration).attrTween("stroke-dasharray", tweenDash);
-  }
-
-  function tweenDash() {
-    const l = this.getTotalLength();
+    const l = path.node().getTotalLength(), dur = (l + 5000) / 2;
     const i = d3.interpolateString("0," + l, l + "," + l);
-    return t => i(t);
-  }
-  
-  function removePath(path) {
-    path.transition().duration(1000).attr("opacity", 0).remove();
+    path.transition().duration(dur).attrTween("stroke-dasharray", function() {return t => i(t)});
   }
 
-  function stateHighlightOff() {
-    debug.selectAll(".highlight").each(function(el) {
-      d3.select(this).call(removePath);
+  function stateHighlightOff(event) {
+    debug.selectAll(".highlight").each(function() {
+      d3.select(this).transition().duration(1000).attr("opacity", 0).remove();
     });
   }
 
diff --git a/modules/ui/heightmap-editor.js b/modules/ui/heightmap-editor.js
index 2df0cdba..7648f0c9 100644
--- a/modules/ui/heightmap-editor.js
+++ b/modules/ui/heightmap-editor.js
@@ -311,7 +311,7 @@ function editHeightmap() {
       const land = pack.cells.h[i] >= 20;
 
       // check biome
-      if (land && !biome[g]) pack.cells.biome[i] = getBiomeId(grid.cells.prec[g], grid.cells.temp[g]);
+      if (!biome[g]) pack.cells.biome[i] = getBiomeId(grid.cells.prec[g], grid.cells.temp[g]);
       else if (!land && biome[g]) pack.cells.biome[i] = 0;
       else pack.cells.biome[i] = biome[g];
 
diff --git a/modules/ui/layers.js b/modules/ui/layers.js
index 1f0a0989..5b3fb3d1 100644
--- a/modules/ui/layers.js
+++ b/modules/ui/layers.js
@@ -334,9 +334,9 @@ function drawBiomes() {
   const cells = pack.cells, vertices = pack.vertices, n = cells.i.length;
   const used = new Uint8Array(cells.i.length);
   const paths = new Array(biomesData.i.length).fill("");
-  
+
   for (const i of cells.i) {
-    if (!cells.biome[i]) continue; // no need to mark water
+    if (!cells.biome[i]) continue; // no need to mark marine biome (liquid water)
     if (used[i]) continue; // already marked
     const b = cells.biome[i];
     const onborder = cells.c[i].some(n => cells.biome[n] !== b);
diff --git a/modules/ui/military-overview.js b/modules/ui/military-overview.js
index edbd8123..e08d1c50 100644
--- a/modules/ui/military-overview.js
+++ b/modules/ui/military-overview.js
@@ -20,6 +20,7 @@ function overviewMilitary() {
 
   // add listeners
   document.getElementById("militaryOverviewRefresh").addEventListener("click", addLines);
+  document.getElementById("militaryPercentage").addEventListener("click", togglePercentageMode);
   document.getElementById("militaryOptionsButton").addEventListener("click", militaryCustomize);
   document.getElementById("militaryOverviewRecalculate").addEventListener("click", militaryRecalculate);
   document.getElementById("militaryExport").addEventListener("click", downloadMilitaryData);
@@ -29,6 +30,11 @@ function overviewMilitary() {
     changeAlert(state, line, +el.value);
   });
 
+  body.addEventListener("click", function(ev) {
+    const el = ev.target, line = el.parentNode, state = +line.dataset.id;
+    if (el.tagName === "SPAN") overviewRegiments(state);
+  });
+
   // update military types in header and tooltips
   function updateHeaders() {
     const header = document.getElementById("militaryHeader");
@@ -62,10 +68,11 @@ function overviewMilitary() {
         <svg data-tip="${s.fullName}" width=".9em" height=".9em" style="margin-bottom:-1px"><rect x="0" y="0" width="100%" height="100%" fill="${s.color}" class="fillRect"></svg>
         <input data-tip="${s.fullName}" style="width:6em" value="${s.name}" readonly>
         ${lineData}
-        <div data-type="total" data-tip="Total state military personnel (considering crew)"><b>${si(total)}</b></div>
-        <div data-tip="State population">${si(population)}</div>
+        <div data-type="total" data-tip="Total state military personnel (considering crew)" style="font-weight: bold">${si(total)}</div>
+        <div data-type="population" data-tip="State population">${si(population)}</div>
         <div data-type="rate" data-tip="Military personnel rate (% of state population). Depends on war alert">${rn(rate, 2)}%</div>
-        <input data-type="alert" data-tip="War Alert. Editable modifier to military forces number, depends of political situation" type="number" min=0 step=.01 value="${rn(s.alert, 2)}">
+        <input data-tip="War Alert. Editable modifier to military forces number, depends of political situation" style="width:4.1em" type="number" min=0 step=.01 value="${rn(s.alert, 2)}">
+        <span data-tip="Show regiments list" class="icon-list-bullet pointer"></span>
       </div>`;
     }
     body.insertAdjacentHTML("beforeend", lines);
@@ -74,6 +81,8 @@ function overviewMilitary() {
     // add listeners
     body.querySelectorAll("div.states").forEach(el => el.addEventListener("mouseenter", ev => stateHighlightOn(ev)));
     body.querySelectorAll("div.states").forEach(el => el.addEventListener("mouseleave", ev => stateHighlightOff(ev)));
+
+    if (body.dataset.type === "percentage") {body.dataset.type = "absolute"; togglePercentageMode();}
     applySorting(militaryHeader);
   }
 
@@ -103,7 +112,9 @@ function overviewMilitary() {
   function updateFooter() {
     const lines = Array.from(body.querySelectorAll(":scope > div"));
     const statesNumber = militaryFooterStates.innerHTML = pack.states.filter(s => s.i && !s.removed).length;
-    militaryFooterForces.innerHTML = si(d3.sum(lines.map(el => el.dataset.total)) / statesNumber);
+    const total = d3.sum(lines.map(el => el.dataset.total));
+    militaryFooterForcesTotal.innerHTML = si(total);
+    militaryFooterForces.innerHTML = si(total / statesNumber);
     militaryFooterRate.innerHTML = rn(d3.sum(lines.map(el => el.dataset.rate)) / statesNumber, 2) + "%";
     militaryFooterAlert.innerHTML = rn(d3.sum(lines.map(el => el.dataset.alert)) / statesNumber, 2);
   }
@@ -112,31 +123,51 @@ function overviewMilitary() {
     if (!layerIsOn("toggleStates")) return;
     const state = +event.target.dataset.id;
     if (customization || !state) return;
-    const path = regions.select("#state"+state).attr("d");
-    debug.append("path").attr("class", "highlight").attr("d", path)
+    const d = regions.select("#state"+state).attr("d");
+
+    const path = debug.append("path").attr("class", "highlight").attr("d", d)
       .attr("fill", "none").attr("stroke", "red").attr("stroke-width", 1).attr("opacity", 1)
-      .attr("filter", "url(#blur1)").call(transition);
-  }
+      .attr("filter", "url(#blur1)");
 
-  function transition(path) {
-    const duration = (path.node().getTotalLength() + 5000) / 2;
-    path.transition().duration(duration).attrTween("stroke-dasharray", tweenDash);
-  }
-
-  function tweenDash() {
-    const l = this.getTotalLength();
+    const l = path.node().getTotalLength(), dur = (l + 5000) / 2;
     const i = d3.interpolateString("0," + l, l + "," + l);
-    return t => i(t);
+    path.transition().duration(dur).attrTween("stroke-dasharray", function() {return t => i(t)});
+
+    armies.select("#army"+state).transition().duration(dur).style("fill", "#ff0000");
   }
 
-  function removePath(path) {
-    path.transition().duration(1000).attr("opacity", 0).remove();
-  }
-
-  function stateHighlightOff() {
+  function stateHighlightOff(event) {
     debug.selectAll(".highlight").each(function() {
-      d3.select(this).call(removePath);
+      d3.select(this).transition().duration(1000).attr("opacity", 0).remove();
     });
+
+    const state = +event.target.dataset.id;
+    armies.select("#army"+state).transition().duration(1000).style("fill", null);
+  }
+
+  function togglePercentageMode() {
+    if (body.dataset.type === "absolute") {
+      body.dataset.type = "percentage";
+      const lines = body.querySelectorAll(":scope > div");
+      const array = Array.from(lines), cache = [];
+
+      const total = function(type) {
+        if (cache[type]) cache[type];
+        cache[type] = d3.sum(array.map(el => +el.dataset[type]));
+        return cache[type];
+      }
+
+      lines.forEach(function(el) {
+        el.querySelectorAll("div").forEach(function(div) {
+          const type = div.dataset.type;
+          if (type === "rate") return;
+          div.textContent = rn(+el.dataset[type] / total(type) * 100) + "%";
+        });
+      });
+    } else {
+      body.dataset.type = "absolute";
+      addLines();
+    }
   }
 
   function militaryCustomize() {
diff --git a/modules/ui/options.js b/modules/ui/options.js
index bf9ae5c2..53a5a1ec 100644
--- a/modules/ui/options.js
+++ b/modules/ui/options.js
@@ -336,10 +336,10 @@ function randomizeOptions() {
   // 'Options' settings
   if (randomize || !locked("template")) randomizeHeightmapTemplate();
   if (randomize || !locked("regions")) regionsInput.value = regionsOutput.value = gauss(15, 3, 2, 30);
-  if (randomize || !locked("provinces")) provincesInput.value = provincesOutput.value = gauss(40, 20, 20, 100);
+  if (randomize || !locked("provinces")) provincesInput.value = provincesOutput.value = gauss(20, 10, 20, 100);
   if (randomize || !locked("manors")) {manorsInput.value = 1000; manorsOutput.value = "auto";}
   if (randomize || !locked("religions")) religionsInput.value = religionsOutput.value = gauss(5, 2, 2, 10);
-  if (randomize || !locked("power")) powerInput.value = powerOutput.value = gauss(3, 2, 0, 10);
+  if (randomize || !locked("power")) powerInput.value = powerOutput.value = gauss(4, 2, 0, 10, 2);
   if (randomize || !locked("neutral")) neutralInput.value = neutralOutput.value = rn(1 + Math.random(), 1);
   if (randomize || !locked("cultures")) culturesInput.value = culturesOutput.value = gauss(12, 3, 5, 30);
   if (randomize || !locked("culturesSet")) randomizeCultureSet();
diff --git a/modules/ui/regiments-overview.js b/modules/ui/regiments-overview.js
new file mode 100644
index 00000000..176bf642
--- /dev/null
+++ b/modules/ui/regiments-overview.js
@@ -0,0 +1,160 @@
+"use strict";
+function overviewRegiments(state) {
+  if (customization) return;
+  closeDialogs(".stable");
+
+  const body = document.getElementById("regimentsBody");
+  updateFilter();
+  addLines();
+  $("#regimentsOverview").dialog();
+
+  if (modules.overviewRegiments) return;
+  modules.overviewRegiments = true;
+  updateHeaders();
+
+  $("#regimentsOverview").dialog({
+    title: "Regiments Overview", resizable: false, width: fitContent(),
+    position: {my: "center", at: "center", of: "svg"}
+  });
+
+  // add listeners
+  document.getElementById("regimentsOverviewRefresh").addEventListener("click", addLines);
+  document.getElementById("regimentsPercentage").addEventListener("click", togglePercentageMode);
+  document.getElementById("regimentsAddNew").addEventListener("click", toggleAddRegiment);
+  document.getElementById("regimentsExport").addEventListener("click", downloadRegimentsData);
+  document.getElementById("regimentsFilter").addEventListener("change", filterRegiments);
+
+  body.addEventListener("click", function(ev) {
+    const el = ev.target, line = el.parentNode, state = +line.dataset.id;
+    //if (el.tagName === "SPAN") showRegimentList(state);
+  });
+
+  // update military types in header and tooltips
+  function updateHeaders() {
+    const header = document.getElementById("regimentsHeader");
+    header.querySelectorAll(".removable").forEach(el => el.remove());
+    const insert = html => document.getElementById("regimentsTotal").insertAdjacentHTML("beforebegin", html);
+    for (const u of options.military) {
+      const label = capitalize(u.name.replace(/_/g, ' '));
+      insert(`<div data-tip="Regiment ${u.name} units number. Click to sort" class="sortable removable" data-sortby="${u.name}">${label}&nbsp;</div>`);
+    }
+    header.querySelectorAll(".removable").forEach(function(e) {
+      e.addEventListener("click", function() {sortLines(this);});
+    });
+  }
+
+  // add line for each state
+  function addLines() {
+    body.innerHTML = "";
+    let lines = "";
+    const regiments = [];
+
+    for (const s of pack.states) {
+      if (!s.i || s.removed || !s.military.length) continue;
+      if (state !== -1 && s.i !== state) continue; // specific state is selected
+
+      for (const r of s.military) {
+        const sortData = options.military.map(u => `data-${u.name}=${r.u[u.name]||0}`).join(" ");
+        const lineData = options.military.map(u => `<div data-type="${u.name}" data-tip="${capitalize(u.name)} units number">${r.u[u.name]||0}</div>`).join(" ");
+
+        lines += `<div class="states" data-id=${r.i} data-s="${s.i}" data-state="${s.name}" data-name="${r.name}" ${sortData} data-total="${r.a}">
+          <svg data-tip="${s.fullName}" width=".9em" height=".9em" style="margin-bottom:-1px"><rect x="0" y="0" width="100%" height="100%" fill="${s.color}" class="fillRect"></svg>
+          <input data-tip="${s.fullName}" style="width:6em" value="${s.name}" readonly>
+          <span data-tip="Regiment's emblem" style="width:1em">${r.icon}</span>
+          <input data-tip="Regiment's name" style="width:13em" value="${r.name}" readonly>
+          ${lineData}
+          <div data-type="total" data-tip="Total military personnel (not considering crew)" style="font-weight: bold">${r.a}</div>
+          <span data-tip="Edit regiment" class="icon-pencil pointer"></span>
+        </div>`;
+
+        regiments.push(r);
+      }
+    }
+
+    lines += `<div id="regimentsTotalLine" class="totalLine" data-tip="Total of all displayed regiments">
+      <div style="width: 21em; margin-left: 1em">Regiments: ${regiments.length}</div>
+      ${options.military.map(u => `<div style="width:5em">${si(d3.sum(regiments.map(r => r.u[u.name]||0)))}</div>`).join(" ")}
+      <div style="width:5em">${si(d3.sum(regiments.map(r => r.a)))}</div>
+    </div>`;
+
+    body.insertAdjacentHTML("beforeend", lines);
+    if (body.dataset.type === "percentage") {body.dataset.type = "absolute"; togglePercentageMode();}
+    applySorting(regimentsHeader);
+
+    // add listeners
+    body.querySelectorAll("div.states").forEach(el => el.addEventListener("mouseenter", ev => regimentHighlightOn(ev)));
+    body.querySelectorAll("div.states").forEach(el => el.addEventListener("mouseleave", ev => regimentHighlightOff(ev)));
+  }
+
+  function updateFilter() {
+    const filter = document.getElementById("regimentsFilter");
+    filter.options.length = 0; // remove all options
+    filter.options.add(new Option(`all`, -1, false, state === -1));
+    const statesSorted = pack.states.filter(s => s.i && !s.removed).sort((a, b) => (a.name > b.name) ? 1 : -1);
+    statesSorted.forEach(s => filter.options.add(new Option(s.name, s.i, false, s.i == state)));
+  }
+
+  function filterRegiments() {
+    state = +this.value;
+    addLines();
+  }
+
+  function regimentHighlightOn(event) {
+    const state = +event.target.dataset.s;
+    const id = +event.target.dataset.id;
+    if (customization || !state) return;
+    armies.select(`g > g#regiment${state}-${id}`).transition().duration(2000).style("fill", "#ff0000");
+  }
+
+  function regimentHighlightOff(event) {
+    const state = +event.target.dataset.s;
+    const id = +event.target.dataset.id;
+    armies.select(`g > g#regiment${state}-${id}`).transition().duration(1000).style("fill", null);
+  }
+
+  function togglePercentageMode() {
+    if (body.dataset.type === "absolute") {
+      body.dataset.type = "percentage";
+      const lines = body.querySelectorAll(":scope > div:not(.totalLine)");
+      const array = Array.from(lines), cache = [];
+
+      const total = function(type) {
+        if (cache[type]) cache[type];
+        cache[type] = d3.sum(array.map(el => +el.dataset[type]));
+        return cache[type];
+      }
+
+      lines.forEach(function(el) {
+        el.querySelectorAll("div").forEach(function(div) {
+          const type = div.dataset.type;
+          if (type === "rate") return;
+          div.textContent = rn(+el.dataset[type] / total(type) * 100) + "%";
+        });
+      });
+    } else {
+      body.dataset.type = "absolute";
+      addLines();
+    }
+  }
+
+  function toggleAddRegiment() {
+
+  }
+
+  function downloadRegimentsData() {
+    const units = options.military.map(u => u.name);
+    let data = "State,Id,Name,"+units.map(u => capitalize(u)).join(",")+",Total\n"; // headers
+
+    body.querySelectorAll(":scope > div:not(.totalLine)").forEach(function(el) {
+      data += el.dataset.state + ",";
+      data += el.dataset.id + ",";
+      data += el.dataset.name + ",";
+      data += units.map(u => el.dataset[u]).join(",") + ",";
+      data += el.dataset.total + "\n";
+    });
+
+    const name = getFileName("Regiments") + ".csv";
+    downloadFile(data, name);
+  }
+
+}
\ No newline at end of file
diff --git a/modules/ui/states-editor.js b/modules/ui/states-editor.js
index 61a53035..eb29adb3 100644
--- a/modules/ui/states-editor.js
+++ b/modules/ui/states-editor.js
@@ -173,30 +173,20 @@ function editStates() {
     if (!layerIsOn("toggleStates")) return;
     const state = +event.target.dataset.id;
     if (customization || !state) return;
-    const path = statesBody.select("#state"+state).attr("d");
-    debug.append("path").attr("class", "highlight").attr("d", path)
+    const d = regions.select("#state"+state).attr("d");
+
+    const path = debug.append("path").attr("class", "highlight").attr("d", d)
       .attr("fill", "none").attr("stroke", "red").attr("stroke-width", 1).attr("opacity", 1)
-      .attr("filter", "url(#blur1)").call(transition);
-  }
+      .attr("filter", "url(#blur1)");
 
-  function transition(path) {
-    const duration = (path.node().getTotalLength() + 5000) / 2;
-    path.transition().duration(duration).attrTween("stroke-dasharray", tweenDash);
-  }
-
-  function tweenDash() {
-    const l = this.getTotalLength();
+    const l = path.node().getTotalLength(), dur = (l + 5000) / 2;
     const i = d3.interpolateString("0," + l, l + "," + l);
-    return t => i(t);
-  }
-  
-  function removePath(path) {
-    path.transition().duration(1000).attr("opacity", 0).remove();
+    path.transition().duration(dur).attrTween("stroke-dasharray", function() {return t => i(t)});
   }
 
-  function stateHighlightOff() {
-    debug.selectAll(".highlight").each(function(el) {
-      d3.select(this).call(removePath);
+  function stateHighlightOff(event) {
+    debug.selectAll(".highlight").each(function() {
+      d3.select(this).transition().duration(1000).attr("opacity", 0).remove();
     });
   }