In any of the periods of the history of human civilization were wars. Long and very short, with numerous victims and destructions or almost without loss. Such is probably the human nature that without battles and battles can not do in many situations. But, if in the past even the most terrible and bloody wars did not affect the chances of humanity for survival, then with modern weapons and military equipment the apocalypse can occur at any moment. Therefore, the best way to "reset" the accumulating aggression will be computer battles. Do you want to go down into the hatch of a mighty modern tank and lead it into battle?