Brothers in Arms: D-Day takes you through the Normandy campaign and like its predecessors follows Sgt. Matthew Baker and Cpl. (later Sgt.) Joe Hartsock through actual missions that took place in Normandy during June of 1944 from the June 6th airborne invasion to St. Saviour. Also like Brothers in Arms: Road to Hill 30 and Brothers in Arms: Earned in Blood it gives the chance for the player to take control of a squad allowing the player to issue orders and decide the best way to assault the enemy. BIA: D-Day also offers a wide range of both German and American authentic World War II weapons, most notably the German FG42.
Much like the first two Brothers in Arms games, D-Day heavily focuses on commanding a squad to suppress then flank an enemy force with head-on assaults usually resulting in disaster. Also the game uses intelligent opponents who will try to outmaneuver the player, although the AI in D-Day is not as advanced as the earlier PC/console versions of the game.