 According to several Defense Company commanders, they developed their own military theories and doctrines, especially a new armoured doctrine in which the Tank itself was to substitute as a Commando soldier in close-quarters urban combat.The Tank was to be considered as an individual commando in an urban combat situation, and thus Tank training was very intensive and focused on attaining unimaginable feats with the Tank.This included engaging targets at less than 20 metres range, firing the main gun from within a building, and so on.