This is new cooperative game mode, named Advanced Skirmish Cooperative. Map only for multiplayer type (there is no AI). Short briefing: there are two sides, first the USSR and second the USA, map keep up 4 players, but you may play like 2vs1 or 1vs1. It's a role skirmish battle, where one player at team control ground forces and second one control air forces and support vehicles. USSR object is to defend their base, USA - to destroy enemy base.