Index: ps/trunk/binaries/data/mods/public/simulation/data/technologies/siege_armor.json
===================================================================
--- ps/trunk/binaries/data/mods/public/simulation/data/technologies/siege_armor.json
+++ ps/trunk/binaries/data/mods/public/simulation/data/technologies/siege_armor.json
@@ -1,23 +0,0 @@
-{
-	"genericName": "Armor plating",
-	"description": "Increased armor on siege engines.",
-	"cost": {
-		"wood": 500,
-		"metal": 250
-	},
-	"requirements": {
-		"all": [
-			{ "tech": "phase_city" },
-			{ "notciv": "maur" }
-		]
-	},
-	"requirementsTooltip": "Unlocked in City Phase.",
-	"icon": "armor_plates_gold.png",
-	"researchTime": 40,
-	"tooltip": "Siege Engines +2 hack resistance.",
-	"modifications": [
-		{ "value": "Resistance/Entity/Damage/Hack", "add": 2 }
-	],
-	"affects": ["Siege"],
-	"soundComplete": "interface/alarm/alarm_upgradearmory.xml"
-}
Index: ps/trunk/binaries/data/mods/public/simulation/data/technologies/siege_attack.json
===================================================================
--- ps/trunk/binaries/data/mods/public/simulation/data/technologies/siege_attack.json
+++ ps/trunk/binaries/data/mods/public/simulation/data/technologies/siege_attack.json
@@ -2,7 +2,7 @@
 	"genericName": "Advanced Siege",
 	"description": "Advanced technologies improve siege efficiency.",
 	"cost": {
-		"wood": 1000,
+		"wood": 800,
 		"metal": 500
 	},
 	"requirements": {
Index: ps/trunk/binaries/data/mods/public/simulation/data/technologies/siege_build_time.json
===================================================================
--- ps/trunk/binaries/data/mods/public/simulation/data/technologies/siege_build_time.json
+++ ps/trunk/binaries/data/mods/public/simulation/data/technologies/siege_build_time.json
@@ -0,0 +1,17 @@
+{
+	"genericName": "Siegecraft",
+	"description": "The science or craft of laying or carrying out sieges.",
+	"cost": {
+		"wood": 600
+	},
+	"requirements": { "tech": "phase_city" },
+	"requirementsTooltip": "Unlocked in City Phase.",
+	"icon": "engineering.png",
+	"researchTime": 40,
+	"tooltip": "Siege Weapons −40% construction time.",
+	"modifications": [
+		{ "value": "Cost/BuildTime", "multiply": 0.8 }
+	],
+	"affects": ["Siege"],
+	"soundComplete": "interface/alarm/alarm_upgradearmory.xml"
+}
Index: ps/trunk/binaries/data/mods/public/simulation/data/technologies/siege_cost_metal.json
===================================================================
--- ps/trunk/binaries/data/mods/public/simulation/data/technologies/siege_cost_metal.json
+++ ps/trunk/binaries/data/mods/public/simulation/data/technologies/siege_cost_metal.json
@@ -1,24 +0,0 @@
-{
-	"genericName": "Metalworker",
-	"description": "Siege engines require less metal.",
-	"cost": {
-		"food": 500,
-		"wood": 500,
-		"stone": 250
-	},
-	"requirements": {
-		"all": [
-			{ "tech": "phase_city" },
-			{ "notciv": "maur" }
-		]
-	},
-	"requirementsTooltip": "Unlocked in City Phase.",
-	"icon": "metalworker.png",
-	"researchTime": 40,
-	"tooltip": "Siege Engines −20% metal cost.",
-	"modifications": [
-		{ "value": "Cost/Resources/metal", "multiply": 0.8 }
-	],
-	"affects": ["Siege"],
-	"soundComplete": "interface/alarm/alarm_upgradearmory.xml"
-}
Index: ps/trunk/binaries/data/mods/public/simulation/data/technologies/siege_cost_wood.json
===================================================================
--- ps/trunk/binaries/data/mods/public/simulation/data/technologies/siege_cost_wood.json
+++ ps/trunk/binaries/data/mods/public/simulation/data/technologies/siege_cost_wood.json
@@ -1,24 +0,0 @@
-{
-	"genericName": "Artillery Instructors",
-	"description": "Siege engines require less wood.",
-	"cost": {
-		"food": 500,
-		"stone": 250,
-		"metal": 500
-	},
-	"requirements": {
-		"all": [
-			{ "tech": "phase_city" },
-			{ "notciv": "maur" }
-		]
-	},
-	"requirementsTooltip": "Unlocked in City Phase.",
-	"icon": "anvil.png",
-	"researchTime": 40,
-	"tooltip": "Siege Engines −20% wood cost.",
-	"modifications": [
-		{ "value": "Cost/Resources/wood", "multiply": 0.8 }
-	],
-	"affects": ["Siege"],
-	"soundComplete": "interface/alarm/alarm_upgradearmory.xml"
-}
Index: ps/trunk/binaries/data/mods/public/simulation/data/technologies/siege_health.json
===================================================================
--- ps/trunk/binaries/data/mods/public/simulation/data/technologies/siege_health.json
+++ ps/trunk/binaries/data/mods/public/simulation/data/technologies/siege_health.json
@@ -0,0 +1,17 @@
+{
+	"genericName": "Armor plating",
+	"description": "Cover the exterior with iron plates to protect against fire and projectiles.",
+	"cost": {
+		"metal": 600
+	},
+	"requirements": { "tech": "phase_city" },
+	"requirementsTooltip": "Unlocked in City Phase.",
+	"icon": "armor_plates_gold.png",
+	"researchTime": 40,
+	"tooltip": "Siege Towers and Battering Rams +25% health.",
+	"modifications": [
+		{ "value": "Health/Max", "multiply": 1.25 }
+	],
+	"affects": ["Ram", "SiegeTower"],
+	"soundComplete": "interface/alarm/alarm_upgradearmory.xml"
+}
Index: ps/trunk/binaries/data/mods/public/simulation/data/technologies/siege_pack_unpack.json
===================================================================
--- ps/trunk/binaries/data/mods/public/simulation/data/technologies/siege_pack_unpack.json
+++ ps/trunk/binaries/data/mods/public/simulation/data/technologies/siege_pack_unpack.json
@@ -0,0 +1,27 @@
+{
+	"genericName": "Military Engineers",
+	"description": "Military engineers are responsible for improvements in siege weapons",
+	"cost": {
+		"food": 800
+	},
+	"requirements": {
+		"all": [
+			{ "tech": "phase_city" },
+			{ "notciv": "brit" },
+			{ "notciv": "gaul" },
+			{ "notciv": "iber" },
+			{ "notciv": "maur" },
+			{ "notciv": "kush" },
+			{ "notciv": "pers" }
+		]
+	},
+	"requirementsTooltip": "Unlocked in City Phase.",
+	"icon": "military_engineers.png",
+	"researchTime": 40,
+	"tooltip": "Siege Weapons –40% pack and unpack time.",
+	"modifications": [
+		{ "value": "Pack/Time", "multiply": 0.6 }
+	],
+	"affects": ["Siege"],
+	"soundComplete": "interface/alarm/alarm_upgradearmory.xml"
+}
Index: ps/trunk/binaries/data/mods/public/simulation/templates/template_structure_military_arsenal.xml
===================================================================
--- ps/trunk/binaries/data/mods/public/simulation/templates/template_structure_military_arsenal.xml
+++ ps/trunk/binaries/data/mods/public/simulation/templates/template_structure_military_arsenal.xml
@@ -49,9 +49,9 @@
     </Entities>
     <Technologies datatype="tokens">
       siege_attack
-      siege_armor
-      siege_cost_metal
-      siege_cost_wood
+      siege_build_time
+      siege_health
+      siege_pack_unpack
       siege_bolt_accuracy
     </Technologies>
   </ProductionQueue>