A tank is a tracked, graithit fechtin machine, whillk souders mobeelity an fechtin abeelity. Firepouer is for ordinar boden bi a pouerfu main gun an hott smawer machine-guns. Tanks war foremaist biggit tae breuk the deidlock o trench warfare. Aucht its firepouer an graith, whilk maks it a pouerfu wappen, it is conseedered a key pairt o modren airmies.