KhTZ-16
The KhTZ-16 (Russian: ХТЗ-16) (after the Kharkiv Tractor Factory; Ukrainian: Харківський Тракторний Завод) was a Soviet improvised fighting vehicle of the Second World War, built on the chassis of an STZ-3 tractor. The vehicles were built in Kharkiv until the factory was evacuated to the east, at which time production moved to Stalingrad.