diff --git a/client/public/stylesheets/other/toolbar.css b/client/public/stylesheets/other/toolbar.css
index 4754fa83..e770a8ca 100644
--- a/client/public/stylesheets/other/toolbar.css
+++ b/client/public/stylesheets/other/toolbar.css
@@ -68,7 +68,7 @@
     display: none;
 }
 
-#unit-visibility-control > div:nth-child(3),
+#unit-visibility-control > div:nth-child(4),
 #coalition-visibility-control {
 	border-left: 2px solid white;
 	padding-left: 12px;
diff --git a/client/public/themes/olympus/images/buttons/visibility/head-side-virus-solid.svg b/client/public/themes/olympus/images/buttons/visibility/head-side-virus-solid.svg
new file mode 100644
index 00000000..b701e751
--- /dev/null
+++ b/client/public/themes/olympus/images/buttons/visibility/head-side-virus-solid.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" height="16" width="16" viewBox="0 0 512 512"><!--!Font Awesome Free 6.5.1 by @fontawesome - https://fontawesome.com License - https://fontawesome.com/license/free Copyright 2023 Fonticons, Inc.--><path d="M0 224.2C0 100.6 100.2 0 224 0h24c95.2 0 181.2 69.3 197.3 160.2c2.3 13 6.8 25.7 15.1 36l42 52.6c6.2 7.8 9.6 17.4 9.6 27.4c0 24.2-19.6 43.8-43.8 43.8H448v64c0 35.3-28.7 64-64 64H320v32c0 17.7-14.3 32-32 32H96c-17.7 0-32-14.3-32-32V407.3c0-16.7-6.9-32.5-17.1-45.8C16.6 322.4 0 274.1 0 224.2zM224 64c-8.8 0-16 7.2-16 16c0 33-39.9 49.5-63.2 26.2c-6.2-6.2-16.4-6.2-22.6 0s-6.2 16.4 0 22.6C145.5 152.1 129 192 96 192c-8.8 0-16 7.2-16 16s7.2 16 16 16c33 0 49.5 39.9 26.2 63.2c-6.2 6.2-6.2 16.4 0 22.6s16.4 6.2 22.6 0C168.1 286.5 208 303 208 336c0 8.8 7.2 16 16 16s16-7.2 16-16c0-33 39.9-49.5 63.2-26.2c6.2 6.2 16.4 6.2 22.6 0s6.2-16.4 0-22.6C302.5 263.9 319 224 352 224c8.8 0 16-7.2 16-16s-7.2-16-16-16c-33 0-49.5-39.9-26.2-63.2c6.2-6.2 6.2-16.4 0-22.6s-16.4-6.2-22.6 0C279.9 129.5 240 113 240 80c0-8.8-7.2-16-16-16zm-24 96a24 24 0 1 1 0 48 24 24 0 1 1 0-48zm40 80a16 16 0 1 1 32 0 16 16 0 1 1 -32 0z"/></svg>
\ No newline at end of file
diff --git a/client/src/constants/constants.ts b/client/src/constants/constants.ts
index d3961b1f..41ec43fc 100644
--- a/client/src/constants/constants.ts
+++ b/client/src/constants/constants.ts
@@ -188,6 +188,13 @@ export const MAP_MARKER_CONTROLS: MapMarkerVisibilityControl[] = [{
     "protectable": true,
     "toggles": ["dcs"],
     "tooltip": "Toggle DCS-controlled units' visibility"
+}, {
+    "image": "visibility/head-side-virus-solid.svg",
+    "isProtected": false,
+    "name": "Olympus",
+    "protectable": false,
+    "toggles": ["olympus"],
+    "tooltip": "Toggle Olympus-controlled units' visibility"
 }, {
     "image": "visibility/aircraft.svg",
     "name": "Aircraft",
diff --git a/client/src/unit/unit.ts b/client/src/unit/unit.ts
index 1e6df10a..57483072 100644
--- a/client/src/unit/unit.ts
+++ b/client/src/unit/unit.ts
@@ -565,6 +565,14 @@ export abstract class Unit extends CustomMarker {
         return false;
     }
 
+    isControlledByDCS() {
+        return this.getControlled() === false && this.getHuman() === false;
+    }
+
+    isControlledByOlympus() {
+        return this.getControlled() === true;
+    }
+
     /********************** Icon *************************/
     createIcon(): void {
         /* Set the icon */
@@ -691,9 +699,11 @@ export abstract class Unit extends CustomMarker {
         const hiddenTypes = getApp().getMap().getHiddenTypes();
         var hidden = (
             /* Hide the unit if it is a human and humans are hidden */
-            (this.#human && hiddenTypes.includes("human")) ||
-            /* Hide the unit if it is DCS controlled and DCS controlled units are hidden */
-            (this.#controlled == false && hiddenTypes.includes("dcs")) ||
+            (this.getHuman() && hiddenTypes.includes("human")) ||
+            /* Hide the unit if it is DCS-controlled and DCS controlled units are hidden */
+            (this.isControlledByDCS() && hiddenTypes.includes("dcs")) ||
+            /* Hide the unit if it is Olympus-controlled and Olympus-controlled units are hidden */
+            (this.isControlledByOlympus() && hiddenTypes.includes("olympus")) ||
             /* Hide the unit if this specific category is hidden */
             (hiddenTypes.includes(this.getMarkerCategory())) ||
             /* Hide the unit if this coalition is hidden */