diff --git a/resources/lang/en.json b/resources/lang/en.json
index e22b467c8e..9141af80de 100644
--- a/resources/lang/en.json
+++ b/resources/lang/en.json
@@ -1087,5 +1087,8 @@
     "dismiss": "Dismiss",
     "go_to_item": "Go to item {num}",
     "firefox_warning": "OpenFront.io doesn't perform well with [Firefox-based browsers](https://simple.wikipedia.org/wiki/Web_browsers_based_on_Firefox). We recommend you to use a [Chromium-based browser](https://en.wikipedia.org/wiki/Chromium_(web_browser)#Browsers_based_on_Chromium) for best performance."
+  },
+  "control_panel": {
+    "army_limit_warning": "You're near your army limit! Consider sending troops to teammates."
   }
 }
diff --git a/src/client/graphics/layers/ControlPanel.ts b/src/client/graphics/layers/ControlPanel.ts
index f5ae86a934..b1ec8e308a 100644
--- a/src/client/graphics/layers/ControlPanel.ts
+++ b/src/client/graphics/layers/ControlPanel.ts
@@ -2,12 +2,12 @@ import { LitElement, html } from "lit";
 import { customElement, state } from "lit/decorators.js";
 import { assetUrl } from "../../../core/AssetUrls";
 import { EventBus } from "../../../core/EventBus";
-import { Gold } from "../../../core/game/Game";
+import { GameMode, Gold } from "../../../core/game/Game";
 import { GameView } from "../../../core/game/GameView";
 import { UserSettings } from "../../../core/game/UserSettings";
 import { ClientID } from "../../../core/Schemas";
 import { AttackRatioEvent } from "../../InputHandler";
-import { renderNumber, renderTroops } from "../../Utils";
+import { renderNumber, renderTroops, translateText } from "../../Utils";
 import { UIState } from "../UIState";
 import { Layer } from "./Layer";
 const goldCoinIcon = assetUrl("images/GoldCoinIcon.svg");
@@ -36,6 +36,9 @@ export class ControlPanel extends LitElement implements Layer {
   @state()
   private _isVisible = false;
 
+  @state()
+  private _showArmyLimitWarning: boolean = false;
+
   @state()
   private _gold: Gold;
 
@@ -87,14 +90,24 @@ export class ControlPanel extends LitElement implements Layer {
 
     this.updateTroopIncrease();
 
-    this._maxTroops = this.game.config().maxTroops(player);
+    const config = this.game.config();
+    this._maxTroops = config.maxTroops(player);
     this._gold = player.gold();
     this._troops = player.troops();
     this._attackingTroops = player
       .outgoingAttacks()
       .map((a) => a.troops)
       .reduce((a, b) => a + b, 0);
-    this.troopRate = this.game.config().troopIncreaseRate(player) * 10;
+    this.troopRate = config.troopIncreaseRate(player) * 10;
+    const isTeamGame = config.gameConfig().gameMode === GameMode.Team;
+    const canDonateTroops = config.donateTroops();
+    if (isTeamGame && canDonateTroops) {
+      const ratio = this._troops / Math.max(this._maxTroops, 1);
+      this._showArmyLimitWarning = ratio >= config.armyLimitWarningThreshold();
+    } else {
+      this._showArmyLimitWarning = false;
+    }
+
     this.requestUpdate();
   }
 
@@ -258,8 +271,21 @@ export class ControlPanel extends LitElement implements Layer {
     `;
   }
 
+  private renderArmyLimitWarning() {
+    if (!this._showArmyLimitWarning) return html``;
+    return html`
+      <div
+        class="flex items-center gap-1.5 px-1.5 py-1 rounded-md border border-orange-400/60 bg-orange-400/10 text-orange-300 text-xs font-medium mb-1"
+      >
+        <span class="shrink-0">⚠</span>
+        <span>${translateText("control_panel.army_limit_warning")}</span>
+      </div>
+    `;
+  }
+
   private renderDesktop() {
     return html`
+      ${this.renderArmyLimitWarning()}
       <!-- Row 1: troop rate | troop bar | gold -->
       <div class="flex gap-1.5 items-center mb-1">
         <!-- Troop rate -->
@@ -334,6 +360,7 @@ export class ControlPanel extends LitElement implements Layer {
 
   private renderMobile() {
     return html`
+      ${this.renderArmyLimitWarning()}
       <div class="flex gap-2 items-center">
         <!-- Gold -->
         <div
diff --git a/src/core/configuration/Config.ts b/src/core/configuration/Config.ts
index 92915e371f..8a11b5aa4c 100644
--- a/src/core/configuration/Config.ts
+++ b/src/core/configuration/Config.ts
@@ -64,6 +64,7 @@ export interface Config {
   gameConfig(): GameConfig;
   theme(): Theme;
   percentageTilesOwnedToWin(): number;
+  armyLimitWarningThreshold(): number;
   numBots(): number;
   spawnNations(): boolean;
   isUnitDisabled(unitType: UnitType): boolean;
diff --git a/src/core/configuration/DefaultConfig.ts b/src/core/configuration/DefaultConfig.ts
index 010d6910ff..b3dca1e941 100644
--- a/src/core/configuration/DefaultConfig.ts
+++ b/src/core/configuration/DefaultConfig.ts
@@ -592,6 +592,9 @@ export class DefaultConfig implements Config {
     }
     return 80;
   }
+  armyLimitWarningThreshold(): number {
+    return 0.8;
+  }
   boatMaxNumber(): number {
     if (this.isUnitDisabled(UnitType.TransportShip)) {
       return 0;