The Panzer VIII Maus, the largest tank ever actually built (almost 200 tons). One prototype was finished, and sent to fight the Russians. It ran out of gas en route, and was destroyed by its crew. That co-axial gun is a 75mm cannon! The main gun is the mammoth 128mm/L55.
It may look like an Assault Gun or Tank Destroyer, but the Swedes insist the Stridesvagn 103 is a tank. You be the judge.
This seems to be an M24 Chaffe with poor situational awareness
This one was an M5 Stuart. In 1945.
Being Soviet BT-7s, I doubt either one of these is insured.