T-34 Soviet medium tank. This is the tank which surprised the Germans when they tried to invade and occupy Stlaingrad (in Russia). The Panzerkampfwagon IVs were no match for it, not in cannon, not in armour, not in speed. Note the sloping armor - designed to deflect enemy shells, not just stop them. It had a crew of four. This philosophy poured over into their camera designs, giving us the ubituous ZEN IT camera, which can be used as hammers if needed.