Own attack phase, Tap own Medium tank: destroy one armoured car, light or medium tank, either Anti-tank SPG
When ramming Medium tank or Anti-tank SPG: tank, which do ramming, also destroing
When ramming armoured car or light tank: tank, which do ramming, not destroing and tapped. Next turn's Building phase {P}{P}: untap[. Through turn Building phase: untap without any resources]