diff --git a/OpenRA.Game/GameRules/Footprint.cs b/OpenRA.Game/GameRules/Footprint.cs
index 5ac5f528d1..c14bb82bf6 100644
--- a/OpenRA.Game/GameRules/Footprint.cs
+++ b/OpenRA.Game/GameRules/Footprint.cs
@@ -42,7 +42,7 @@ namespace OpenRA.GameRules
 			return TilesWhere( name, dim, footprint.ToArray(), a => a != '_' ).Select( t => t + topLeft );
 		}
 
-		public static IEnumerable<int2> Tiles(Actor a, Traits.Building building)
+		public static IEnumerable<int2> Tiles(Actor a)
 		{
 			return Tiles( a.Info.Name, a.Info.Traits.Get<BuildingInfo>(), a.Location );
 		}
diff --git a/OpenRA.Game/OpenRA.Game.csproj b/OpenRA.Game/OpenRA.Game.csproj
index c37aae5b8b..bf8989a28a 100755
--- a/OpenRA.Game/OpenRA.Game.csproj
+++ b/OpenRA.Game/OpenRA.Game.csproj
@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" ToolsVersion="3.5">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -78,6 +78,7 @@
     <Compile Include="Chat.cs" />
     <Compile Include="Chrome.cs" />
     <Compile Include="GameRules\WeaponInfo.cs" />
+    <Compile Include="Traits\AI\EmitInfantryOnSell.cs" />
     <Compile Include="Traits\AI\ReturnOnIdle.cs" />
     <Compile Include="Traits\Render\HiddenUnderFog.cs" />
     <Compile Include="Traits\World\Shroud.cs" />
diff --git a/OpenRA.Game/Traits/AI/EmitInfantryOnSell.cs b/OpenRA.Game/Traits/AI/EmitInfantryOnSell.cs
new file mode 100644
index 0000000000..7bbaa802bb
--- /dev/null
+++ b/OpenRA.Game/Traits/AI/EmitInfantryOnSell.cs
@@ -0,0 +1,52 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using OpenRA.GameRules;
+
+namespace OpenRA.Traits.AI
+{
+	class EmitInfantryOnSellInfo : StatelessTraitInfo<EmitInfantryOnSell>
+	{
+		public readonly float ValueFraction = .4f;
+		public readonly float MinHpFraction = .3f;
+		public readonly string[] ActorTypes = { "e1" };		// todo: cN as well
+	}
+
+	class EmitInfantryOnSell : INotifySold, INotifyDamage
+	{
+		public void Selling(Actor self) { }
+
+		void Emit(Actor self)
+		{
+			var info = self.Info.Traits.Get<EmitInfantryOnSellInfo>();
+			var csv = self.Info.Traits.GetOrDefault<CustomSellValueInfo>();
+			var cost = csv != null ? csv.Value : self.Info.Traits.Get<BuildableInfo>().Cost;
+			var hp = self.Info.Traits.Get<OwnedActorInfo>().HP;
+			var hpFraction = Math.Max(info.MinHpFraction, hp / self.GetMaxHP());
+			var dudesValue = (int)(hpFraction * info.ValueFraction * cost);
+			var eligibleLocations = Footprint.Tiles(self).ToList();
+			// todo: fix this for unbuildables in ActorTypes, like civilians.
+			var actorTypes = info.ActorTypes.Select(a => new { Name = a, Cost = Rules.Info[a].Traits.Get<BuildableInfo>().Cost }).ToArray();
+
+			while (eligibleLocations.Count > 0 && actorTypes.Any(a => a.Cost <= dudesValue))
+			{
+				var at = actorTypes.Where(a => a.Cost <= dudesValue).Random(self.World.SharedRandom);
+				var loc = eligibleLocations.Random(self.World.SharedRandom);
+
+				eligibleLocations.Remove(loc);
+				dudesValue -= at.Cost;
+
+				self.World.AddFrameEndTask(w => w.CreateActor(at.Name, loc, self.Owner));
+			}
+		}
+
+		public void Sold(Actor self) { Emit(self); }
+
+		public void Damaged(Actor self, AttackInfo e)
+		{
+			if (e.DamageStateChanged && e.DamageState == DamageState.Dead)
+				Emit(self);
+		}
+	}
+}
diff --git a/OpenRA.Game/Traits/ProductionSurround.cs b/OpenRA.Game/Traits/ProductionSurround.cs
index 51cd2de585..1ea16aa510 100644
--- a/OpenRA.Game/Traits/ProductionSurround.cs
+++ b/OpenRA.Game/Traits/ProductionSurround.cs
@@ -34,7 +34,7 @@ namespace OpenRA.Traits
 
 		static int2? FindAdjacentTile(Actor self, bool waterBound)
 		{
-			var tiles = Footprint.Tiles(self, self.traits.Get<Traits.Building>());
+			var tiles = Footprint.Tiles(self);
 			var min = tiles.Aggregate(int2.Min) - new int2(1, 1);
 			var max = tiles.Aggregate(int2.Max) + new int2(1, 1);
 
diff --git a/mods/ra/defaults.yaml b/mods/ra/defaults.yaml
index 913a376d10..c3c7349a68 100644
--- a/mods/ra/defaults.yaml
+++ b/mods/ra/defaults.yaml
@@ -49,6 +49,7 @@
 		Dimensions: 1,1
 		Footprint: x
 	RenderBuilding:
+	EmitInfantryOnSell:
 
 ^Wall:
 	Category: Building
diff --git a/mods/ra/structures.yaml b/mods/ra/structures.yaml
index b594abb1e8..a1f7b2adc5 100644
--- a/mods/ra/structures.yaml
+++ b/mods/ra/structures.yaml
@@ -66,6 +66,7 @@ SPEN:
 	ProductionSurround:
 		Produces: Ship
 	IronCurtainable:
+	-EmitInfantryOnSell:
 
 SYRD:
 	InfiltrateForSonarPulse:
@@ -92,6 +93,7 @@ SYRD:
 	ProductionSurround:
 		Produces: Ship
 	IronCurtainable:
+	-EmitInfantryOnSell:
 
 IRON:
 	RequiresPower:
@@ -743,6 +745,7 @@ SYRF:
 	RenderBuilding:
 		Image: SYRD
 	Fake:
+	-EmitInfantryOnSell:
 
 SPEF:
 	Inherits: ^Building
@@ -759,6 +762,7 @@ SPEF:
 	RenderBuilding:
 		Image: SPEN
 	Fake:
+	-EmitInfantryOnSell:
 
 DOMF:
 	Inherits: ^Building