Bohemia Interactive has released a playable demo for ArmA II: Operation Arrowhead, allowing you to try out this new ArmA 2 stand-alone, expansion pack now available in North America and Europe. Operation Arrowhead is a standalone expansion pack which promises to deliver realistic combat simulation experience in a modern day setting with unprecedented freedom of movement, actions and tactics. Players will enlist into various roles within the US Army, from basic infantrymen, through special operatives, to pilots and tank crew.