Add On # 3 Early birds: Fokker DII, Nieuport 10A2, single-seater Morane L, Caudron G4, Farman MF40, Albatros C.I or LVG C.II

Add On # 4 Late war bombers: Airco DH4, Airco DH9, Breguet XIV, Salmson 2 A2

Expansion 3.0: Belgain Air Force with Hanriot HD.1