Is that a battering ram in that second to last pic?
If yes: Do you have rules for it?
there are the olde siege rules...
Exactly what I use for them, out of the back of the old army book.
Worked exactly like the log ram, just a bit sturdier and slower, plus I think it hit the walls/gates a little harder too.
Edit: not being lazy and actually checking the rules, rough summary of how it works:
Minimum 6 infantry models to push the battering ram, each model pushing the ram adds 1 strength to the attack for a maximum of 8 strength, D6 wounds per attack. Makes one attack versus a wall/gate per turn, units in melee cannot use the ram attack.
-1 Movement penalty for the weight of the ram, but when being shot at roll D6 (1-2 hits the ram, with 7 toughness and 5 wounds makes it hard to kill).
Units can abandon/panic away from the ram and other units can pick it up at any time its free.
Since (theoretically) this battering ram is modelled to look like stone I could make a house rule to reflect this, either bumping up its toughness or wound count by one.