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
@@ -496,6 +496,11 @@
 		let cmpProjectileManager = Engine.QueryInterface(SYSTEM_ENTITY, IID_ProjectileManager);
 		let id = cmpProjectileManager.LaunchProjectileAtPoint(this.entity, realTargetPosition, horizSpeed, gravity);
 
+		let damageSound = "";
+		let cmpSound = Engine.QueryInterface(this.entity, IID_Sound);
+		if (cmpSound)
+			damageSound = cmpSound.GetSoundGroup('damage');
+
 		let data = {
 			"type": type,
 			"attacker": this.entity,
@@ -506,7 +511,8 @@
 			"projectileId": id,
 			"bonus": this.GetBonusTemplate(type),
 			"isSplash": false,
-			"attackerOwner": attackerOwner
+			"attackerOwner": attackerOwner,
+			"damageSound": damageSound
 		};
 		if (this.template.Ranged.Splash)
 		{
Index: binaries/data/mods/public/simulation/components/Damage.js
===================================================================
--- binaries/data/mods/public/simulation/components/Damage.js
+++ binaries/data/mods/public/simulation/components/Damage.js
@@ -111,6 +111,12 @@
 	if (!data.position)
 		return;
 
+	// TODO: Create cpp function to start the explosion animation defined in the unit's actor file
+
+	let cmpSoundManager = Engine.QueryInterface(SYSTEM_ENTITY, IID_SoundManager);
+	if (cmpSoundManager && data.damageSound)
+		cmpSoundManager.PlaySoundGroupAtPosition(data.damageSound, data.position);
+
 	// Do this first in case the direct hit kills the target
 	if (data.isSplash)
 	{
Index: binaries/data/mods/public/simulation/templates/template_unit_mechanical_siege_onager.xml
===================================================================
--- binaries/data/mods/public/simulation/templates/template_unit_mechanical_siege_onager.xml
+++ binaries/data/mods/public/simulation/templates/template_unit_mechanical_siege_onager.xml
@@ -12,7 +12,7 @@
       <PrepareTime>4000</PrepareTime>
       <RepeatTime>5000</RepeatTime>
       <Spread>4.0</Spread>
-      <Delay>0</Delay>
+      <Delay>2000</Delay>
       <Splash>
         <Shape>Circular</Shape>
         <Range>10</Range>
@@ -63,6 +63,7 @@
   <Sound>
     <SoundGroups>
       <attack>attack/siege/ballist_attack.xml</attack>
+      <damage>attack/destruction/building_collapse_large.xml</damage>
     </SoundGroups>
   </Sound>
   <StatusBars>
Index: source/simulation2/components/CCmpSoundManager.cpp
===================================================================
--- source/simulation2/components/CCmpSoundManager.cpp
+++ source/simulation2/components/CCmpSoundManager.cpp
@@ -85,6 +85,13 @@
 		}
 	}
 
+	virtual void PlaySoundGroupAtPosition(const std::wstring& name, const CFixedVector3D& sourcePos)
+	{
+		if (!g_SoundManager)
+			return;
+		g_SoundManager->PlayAsGroup(name, CVector3D(sourcePos), INVALID_ENTITY, false);
+	}
+
 	virtual void StopMusic()
 	{
 		if (!g_SoundManager)
Index: source/simulation2/components/ICmpSoundManager.h
===================================================================
--- source/simulation2/components/ICmpSoundManager.h
+++ source/simulation2/components/ICmpSoundManager.h
@@ -20,6 +20,8 @@
 
 #include "simulation2/system/Interface.h"
 
+#include "maths/FixedVector3D.h"
+
 /**
  * Interface to the engine's sound system.
  */
@@ -33,6 +35,8 @@
 	 */
 	virtual void PlaySoundGroup(const std::wstring& name, entity_id_t source) = 0;
 
+	virtual void PlaySoundGroupAtPosition(const std::wstring& name, const CFixedVector3D& sourcePos) = 0;
+
 	virtual void StopMusic() = 0;
 
 	DECLARE_INTERFACE_TYPE(SoundManager)
Index: source/simulation2/components/ICmpSoundManager.cpp
===================================================================
--- source/simulation2/components/ICmpSoundManager.cpp
+++ source/simulation2/components/ICmpSoundManager.cpp
@@ -23,5 +23,6 @@
 
 BEGIN_INTERFACE_WRAPPER(SoundManager)
 DEFINE_INTERFACE_METHOD_2("PlaySoundGroup", void, ICmpSoundManager, PlaySoundGroup, std::wstring, entity_id_t)
+DEFINE_INTERFACE_METHOD_2("PlaySoundGroupAtPosition", void, ICmpSoundManager, PlaySoundGroupAtPosition, std::wstring, CFixedVector3D)
 DEFINE_INTERFACE_METHOD_0("StopMusic", void, ICmpSoundManager, StopMusic)
 END_INTERFACE_WRAPPER(SoundManager)