In Battlefield 2, players will choose to fight for one of three military superpowers: the United States, the Chinese, or the newly formed Middle East Coalition. Armed with stunning weaponry, players can take control of any of the game's 30+ vehicles to engage in major conflicts with over 100 players in some online battles on the PC. Additionally, persistent character growth allows players to rise through the ranks and attain the ultimate rank of General. The changed game engine and physics system brings the battlefield to life in a surprising way. The material penetration feature measures weapons' ability to fire through barriers based on their composition and players will need to know the difference between concealment and cover in order to survive. Battlefield 2 features immense, richly detailed, destructible environments, from city streets to remote forests, in some of notorious hot spots around the world. Each map in Battlefield 2 adjusts in scale to support the number of players in the world, providing the ideal vehicle- to-player ratio and an optimized gameplay experience. Enhanced team play features allow players to enter the action on the front lines as part of a formal squad, or work behind the scenes in Commander Mode to direct the strategic assaults of their teammates. Soldier kits now affect vehicles that players utilize on the battlefield. For instance, the medic kit can transform a vehicle into a mobile aid station and the special ops kit can render aircraft undetectable to enemy radar.