? 33 - Nieuport Aces of World War 1
? 34 - Italian Aces of World War 2
? 35 - P-40 Warhawk Aces of the CBI
? 36 - P-39 Aircobra Aces of the World War 2
? 37 - Bf 109 Aces of the Russian Front
? 38 - Tomahawk and Kittyhawk Aces of the RAF and Commonwealth
? 39 - SPAD VII Aces of World War 1
? 40 - Fokker Dr I Aces of World War 1