"Schwerer Gustav (English: Heavy Gustaf) was a German 80-centimetre (31.5 in) railway gun. It was developed in the late 1930s by Krupp in Rügenwalde as siege artillery for the explicit purpose of destroying the main forts of the French Maginot Line, the strongest fortifications in existence at the time. The fully assembled gun weighed nearly 1,350 tonnes (1,490 short tons), and could fire shells weighing 7 t (7.7 short tons) to a range of 47 km (29 mi).
-Fully animated reload sequence
-Extremely heavy armor
-Multiple seats for transporting your crew/squad
-A little compartment to hide in if the enemies get close (which shouldn't happen)
-Usable by the AI
-Working ladders to climb to the top level