SU-122
A Soviet self-propelled howitzer of World War II.  The SU-122 was inspired by the German [[sturmgeschutz iii|Sturmgeschütz III]] assault gun, which is the chassis of a [[panzer iii|Panzer III]] tank with a heavy gun in a turretless hull, principally intended to attack bunkers and other fixed positions.  The SU-122 is a similar concept executed on the chassis of a [[T-34]].  As its name suggests, it carries a 122mm howitzer.
su-122