Index: binaries/data/config/default.cfg
===================================================================
--- binaries/data/config/default.cfg
+++ binaries/data/config/default.cfg
@@ -353,6 +353,7 @@
 toggledefaultformation = ""  ; Switch between null default formation and the last default formation used (defaults to "box")
 flare = K                    ; Modifier to send a flare to your allies
 flareactivate = ""           ; Modifier to activate the mode to send a flare to your allies
+calltoarms = ""              ; Modifier to call the selected units to the arms.
 ; Overlays
 showstatusbars = Tab         ; Toggle display of status bars
 devcommands.toggle = "Alt+D" ; Toggle developer commands panel
Index: binaries/data/mods/public/gui/hotkeys/spec/ingame.json
===================================================================
--- binaries/data/mods/public/gui/hotkeys/spec/ingame.json
+++ binaries/data/mods/public/gui/hotkeys/spec/ingame.json
@@ -174,6 +174,10 @@
 			"session.flareactivate": {
 				"name": "Flare (toggle)",
 				"desc": "Set the cursor to Flare. The hotkey can be released."
+			},
+			"session.calltoarms": {
+				"name": "Call to arms",
+				"desc": "Send the selected units on attack move to the specified location after dropping resources."
 			}
 		}
 	}
Index: binaries/data/mods/public/gui/session/input.js
===================================================================
--- binaries/data/mods/public/gui/session/input.js
+++ binaries/data/mods/public/gui/session/input.js
@@ -18,6 +18,7 @@
 const ACTION_GUARD = 3;
 const ACTION_PATROL = 4;
 const ACTION_OCCUPY_TURRET = 5;
+const ACTION_CALLTOARMS = 6;
 var preSelectedAction = ACTION_NONE;
 
 const INPUT_NORMAL = 0;
Index: binaries/data/mods/public/gui/session/unit_actions.js
===================================================================
--- binaries/data/mods/public/gui/session/unit_actions.js
+++ binaries/data/mods/public/gui/session/unit_actions.js
@@ -246,6 +246,47 @@
 		"specificness": 10,
 	},
 
+	"call-to-arms": {
+		"execute": function(target, action, selection, queued, pushFront)
+		{
+			let targetClasses;
+			if (Engine.HotkeyIsPressed("session.attackmoveUnit"))
+				targetClasses = { "attack": ["Unit"] };
+			else
+				targetClasses = { "attack": ["Unit", "Structure"] };
+			Engine.PostNetworkCommand({
+				"type": "call-to-arms",
+				"entities": selection,
+				"target": target,
+				"targetClasses": targetClasses,
+				"queued": queued,
+				"pushFront": pushFront,
+				"allowCapture": true
+			});
+			return true;
+		},
+		"getActionInfo": function(entState, targetState)
+		{
+			return { "possible": !!entState.unitAI };
+		},
+		"actionCheck": function(target, selection)
+		{
+			const actionInfo = getActionInfo("call-to-arms", target, selection);
+			return actionInfo.possible && {
+				"type": "call-to-arms",
+				"cursor": "action-attack",
+				"target": target,
+				"firstAbleEntity": actionInfo.entity
+			};
+		},
+		"preSelectedActionCheck": function(target, selection)
+		{
+			return preSelectedAction == ACTION_CALLTOARMS &&
+				this.actionCheck(target, selection);
+		},
+		"specificness": 50,
+	},
+
 	"patrol":
 	{
 		"execute": function(target, action, selection, queued, pushFront)
@@ -1423,6 +1464,31 @@
 		"allowedPlayers": ["Player"]
 	},
 
+	"call-to-arms": {
+		"getInfo": function(entStates)
+		{
+			if (entStates.every(entState => {
+				const classes = entState.identity.classes;
+				return !MatchesClassList(classes, ["Soldier", "Warship", "Siege", "Healer"]);
+			}))
+			{
+				return false;
+			}
+			return {
+				"tooltip": colorizeHotkey("%(hotkey)s" + " ", "session.calltoarms") +
+				           translate("Send the selected units on attack move to the specified location after dropping resources."),
+				"icon": "call-to-arms.png",
+				"enabled": true
+			};
+		},
+		"execute": function(entStates)
+		{
+			inputState = INPUT_PRESELECTEDACTION;
+			preSelectedAction = ACTION_CALLTOARMS;
+		},
+		"allowedPlayers": ["Player"]
+	},
+
 	"garrison": {
 		"getInfo": function(entStates)
 		{
Index: binaries/data/mods/public/simulation/components/UnitAI.js
===================================================================
--- binaries/data/mods/public/simulation/components/UnitAI.js
+++ binaries/data/mods/public/simulation/components/UnitAI.js
@@ -4057,7 +4057,7 @@
 
 UnitAI.prototype.UpdateWorkOrders = function(type)
 {
-	var isWorkType = type => type == "Gather" || type == "Trade" || type == "Repair" || type == "ReturnResource";
+	const isWorkType = t => t == "Gather" || t == "Trade" || t == "Repair" || t == "ReturnResource";
 	if (isWorkType(type))
 	{
 		this.workOrders = [];
@@ -5370,6 +5370,24 @@
 	this.AddOrder("Stop", { "force": true }, queued, pushFront);
 };
 
+/**
+ * The unit will drop all resources at the closest dropsite. If this unit is no gatherer or
+ * no dropsite is available, it will do nothing.
+ *
+ * @return {boolean} Whether this unit could drop resources.
+ */
+UnitAI.prototype.DropAtNearestDropSite = function(queued, pushFront)
+{
+	const cmpResourceGatherer = Engine.QueryInterface(this.entity, IID_ResourceGatherer);
+	if (!cmpResourceGatherer)
+		return false;
+	const nearby = this.FindNearestDropsite(cmpResourceGatherer.GetMainCarryingType());
+	if (!nearby)
+		return false;
+	this.ReturnResource(nearby, queued, pushFront);
+	return true;
+};
+
 /**
  * Adds walk-to-target order to queue, this only occurs in response
  * to a player order, and so is forced.
Index: binaries/data/mods/public/simulation/helpers/Commands.js
===================================================================
--- binaries/data/mods/public/simulation/helpers/Commands.js
+++ binaries/data/mods/public/simulation/helpers/Commands.js
@@ -279,6 +279,30 @@
 		}
 	},
 
+	"call-to-arms": function(player, cmd, data)
+	{
+		const templateManager = Engine.QueryInterface(SYSTEM_ENTITY, IID_TemplateManager);
+		const unitsToMove = data.entities.filter(ent => {
+			const cmpIdentity = Engine.QueryInterface(ent, IID_Identity);
+			return MatchesClassList(cmpIdentity.GetClassesList(), ["Soldier", "Warship", "Siege", "Healer"]);
+		});
+		GetFormationUnitAIs(unitsToMove, player).forEach(cmpUnitAI => {
+			const target = cmd.target;
+			if (cmd.pushFront)
+			{
+				cmpUnitAI.WalkAndFight(target.x, target.z, cmd.targetClasses, cmd.allowCapture, true, cmd.pushFront);
+				if (!cmpUnitAI.DropAtNearestDropSite(cmd.queued, cmd.pushFront))
+					cmpUnitAI.Stop(cmd.queued);
+			}
+			else
+			{
+				if (!cmpUnitAI.DropAtNearestDropSite(cmd.queued, cmd.pushFront))
+					cmpUnitAI.Stop(cmd.queued);
+				cmpUnitAI.WalkAndFight(target.x, target.z, cmd.targetClasses, cmd.allowCapture, true, cmd.pushFront);
+			}
+		});
+	},
+
 	"remove-guard": function(player, cmd, data)
 	{
 		for (let ent of data.entities)