Well...
I played Call of Duty. Brothers in Arms are more squad based game. And it is really hard if you turn Hair-cross off like in real life. It can get frustrated because Toomy guns jump alot when you shoot, and the 20-bullet magazine does run dry really quick. Very nice game if you get more realism.
Call of duty is likr a single person shooter but with help of some AI toons, cool but lack realism.