The Powerhouse Series book set pits the Fokker DVII of Georg von Hantlemann against the SPAD XIII of Eddie Rickenbacker. The game provides statistics for several other WWI fighter planes that may be played using this set.The Powerhouse books include a different variety of maneuvers than was used in the Handy Rotary books making for interesting match-ups between the two sets.Ace of Aces Series: Ace of Aces - Handy Rotary Series Ace of Aces - Powerhouse Series Ace of Aces - Flying Machines Ace of Aces - Balloon Buster Ace of Aces - Handy Rotary Deluxe Edition Ace of Aces - Wingleader Ace of Aces - Jet Eagles - BoardGameGeek