diff --git a/data/units/Iron_Mauler.cfg b/data/units/Iron_Mauler.cfg
new file mode 100644
index 00000000000..b7252805ec0
--- /dev/null
+++ b/data/units/Iron_Mauler.cfg
@@ -0,0 +1,33 @@
+[unit] 
+ name=Iron Mauler
+ race=human 
+ image=human-siegetrooper.png 
+ image_defensive=human-siegetrooper-defend.png 
+ hitpoints=64 
+ movement_type=armoredfoot 
+ movement=4 
+ experience=500 
+ level=3 
+ alignment=lawful 
+ advanceto=null 
+ cost=100 
+ unit_description="Towering over the battlefield like iron giants, Iron Maulers are renowned (and feared) for their incredible resilience and brutal hammer blows. Were it not for their slow movement and rarity on the battlefield, these mighty soldiers would control the continent." 
+ get_hit_sound=groan.wav 
+ usage=fighter 
+    [attack] 
+    name=mace 
+    type=impact 
+    range=short 
+    damage=24 
+    number=2 
+       [frame] 
+       begin=-100 
+       end=100 
+       image=human-siegetrooper-attack.png 
+       [/frame] 
+       [sound] 
+       time=-100 
+       sound=mace.wav 
+       [/sound] 
+    [/attack] 
+ [/unit] 
diff --git a/data/units/Shock_Trooper.cfg b/data/units/Shock_Trooper.cfg
index d7ffd8e93c5..a8dc9989ca4 100644
--- a/data/units/Shock_Trooper.cfg
+++ b/data/units/Shock_Trooper.cfg
@@ -5,10 +5,10 @@ image=human-shocktrooper.png
 hitpoints=52
 movement_type=armoredfoot
 movement=4
-experience=500
+experience=110
 level=2
 alignment=lawful
-advanceto=null
+advanceto=Iron Mauler
 cost=30
 unit_description="Shock Troopers are the elite of the Wesnothian military. Although they move slowly, they are immensely powerful and therefore feared throughout Wesnoth and even into the lands beyond."
 get_hit_sound=groan.wav
diff --git a/images/human-siegetrooper-defend.png b/images/human-siegetrooper-defend.png
new file mode 100644
index 00000000000..9ce9962f9fe
Binary files /dev/null and b/images/human-siegetrooper-defend.png differ
diff --git a/images/human-siegetrooper-melee.png b/images/human-siegetrooper-melee.png
new file mode 100644
index 00000000000..ead6ceefc2d
Binary files /dev/null and b/images/human-siegetrooper-melee.png differ
diff --git a/images/human-siegetrooper.png b/images/human-siegetrooper.png
new file mode 100644
index 00000000000..f6ebc8e973c
Binary files /dev/null and b/images/human-siegetrooper.png differ