Index: binaries/data/mods/public/simulation/components/Armour.js
===================================================================
--- binaries/data/mods/public/simulation/components/Armour.js
+++ binaries/data/mods/public/simulation/components/Armour.js
@@ -43,6 +43,14 @@
 	if (this.invulnerable)
 		return { "killed": false, "change": 0 };
 
+	if (strengths == "InstantKill")
+	{
+		// Special damage to instantly kill entities.
+		let cmpTargetHealth = Engine.QueryInterface(this.entity, IID_Health);
+		if (cmpTargetHealth)
+			return cmpTargetHealth.Reduce(cmpTargetHealth.GetHitpoints());
+	}
+
 	// Adjust damage values based on armour; exponential armour: damage = attack * 0.9^armour
 	var armourStrengths = this.GetArmourStrengths();
 
Index: binaries/data/mods/public/simulation/components/Attack.js
===================================================================
--- binaries/data/mods/public/simulation/components/Attack.js
+++ binaries/data/mods/public/simulation/components/Attack.js
@@ -113,9 +113,7 @@
 			"</Splash>" +
 		"</Ranged>" +
 		"<Slaughter>" +
-			"<Hack>1000.0</Hack>" +
-			"<Pierce>0.0</Pierce>" +
-			"<Crush>0.0</Crush>" +
+			"<InstantKill/>" +
 			"<MaxRange>4.0</MaxRange>" +
 		"</Slaughter>" +
 	"</a:example>" +
@@ -227,9 +225,8 @@
 	"<optional>" +
 		"<element name='Slaughter' a:help='A special attack to kill domestic animals'>" +
 			"<interleave>" +
-				DamageTypes.BuildSchema("damage strength") +
+				"<element name='InstantKill' a:help='Whether this attack kills an entity instantly (e.g. Slaughter).'><empty/></element>" +
 				"<element name='MaxRange'><ref name='nonNegativeDecimal'/></element>" + // TODO: how do these work?
-				Attack.prototype.bonusesSchema +
 				Attack.prototype.preferredClassesSchema +
 				Attack.prototype.restrictedClassesSchema +
 			"</interleave>" +
@@ -447,6 +444,9 @@
 		splash = "/Splash";
 	}
 
+	if ("InstantKill" in template)
+		return "InstantKill";
+
 	let applyMods = damageType =>
 		ApplyValueModificationsToEntity("Attack/" + type + splash + "/" + damageType, +(template[damageType] || 0), this.entity);
 
Index: binaries/data/mods/public/simulation/templates/template_unit_cavalry.xml
===================================================================
--- binaries/data/mods/public/simulation/templates/template_unit_cavalry.xml
+++ binaries/data/mods/public/simulation/templates/template_unit_cavalry.xml
@@ -13,9 +13,7 @@
       <RestrictedClasses datatype="tokens">Field Palisade SiegeWall StoneWall</RestrictedClasses>
     </Capture>
     <Slaughter>
-      <Hack>100.0</Hack>
-      <Pierce>0.0</Pierce>
-      <Crush>0.0</Crush>
+      <InstantKill/>
       <MaxRange>2</MaxRange>
     </Slaughter>
   </Attack>
Index: binaries/data/mods/public/simulation/templates/template_unit_infantry.xml
===================================================================
--- binaries/data/mods/public/simulation/templates/template_unit_infantry.xml
+++ binaries/data/mods/public/simulation/templates/template_unit_infantry.xml
@@ -13,9 +13,7 @@
       <RestrictedClasses datatype="tokens">Field Palisade SiegeWall StoneWall</RestrictedClasses>
     </Capture>
     <Slaughter>
-      <Hack>50.0</Hack>
-      <Pierce>0.0</Pierce>
-      <Crush>0.0</Crush>
+      <InstantKill/>
       <MaxRange>2</MaxRange>
     </Slaughter>
   </Attack>
Index: binaries/data/mods/public/simulation/templates/template_unit_support_female_citizen.xml
===================================================================
--- binaries/data/mods/public/simulation/templates/template_unit_support_female_citizen.xml
+++ binaries/data/mods/public/simulation/templates/template_unit_support_female_citizen.xml
@@ -10,9 +10,7 @@
       <RepeatTime>1000</RepeatTime>
     </Melee>
     <Slaughter>
-      <Hack>25.0</Hack>
-      <Pierce>0.0</Pierce>
-      <Crush>0.0</Crush>
+      <InstantKill/>
       <MaxRange>2</MaxRange>
     </Slaughter>
   </Attack>