Breakthrough casts players into the shoes of Sgt.

Jack Barnes (voiced by Gary Oldman), a paratrooper in the 101st Airborne Division who fights in Normandy and Bastongne, who is later reassigned to the OSS to fight alongside the Red Army in Berlin. The protagonist of Spearhead's campaign is Sgt. Two expansion packs for this game were later released in 2003. Mike Powell, a US Army Ranger who's later made a part-time OSS agent following a nearly-botched mission during Operation Torch.

In this game, characters are introduced to a new protagonist, one Lt. Medal of Honor: Allied Assault is the 3rd entry in the Medal of Honor series, developed by 2015, Inc.