abstract angled angles appearance caterpillar-track continuous-track continuous-tread-band mobility movement propulsion tank-tread track-plates vehicle-propulsion weight-distribution wheels World-War-2-tank-track WWII-tank ammunition bullets cartridges death defense destruction destructive gun machine-gun military mounted mounted-machine-gun pain weapon weaponry World-War-2-tank wounding armour army artillery Camouflage heavy IS 2 machine metal power sign soviet Stalin tank USSR vehicle war wheel