Some details on the DLC:
Arma 2: British Armed Forces key features:
New vehicles and weapons
Modern British troops in multi-terrain, desert and woodland camouflage
Personal weapons: L85A2 and L86A2 rifles, L110A1 machine gun, LRR and AW50 sniper rifles, N-LAW AT launcher
New vehicles: Jackal 2 MWMIK all-terrain vehicle, modernized FV510 Warrior
New helicopters: AH11 Wildcat (multi-role), HC3 Merlin (transport)
British versions: off-road car, Chinook HC2 transport helicopter, Apache AH1 gunship
Desert and woodland paint schemes of the ground vehicles
New single player campaign
Player will command a mobile observation team of British troops into battle with Takistani insurgents. Short campaign will focus on depicting asymmetrical warfare with a guerilla force and counterinsurgency operations.
Multiplayer modes
Cooperative scenarios featuring the British units, vehicles and equipment.
Engine Improvements
Extension of the Engineer's role
Ability for players to effectively operate and command artillery and mortar units