From the publisher's Website:

Luft Krieg is a tabletop air combat wargame set in an alternate world where the wonders of pulp science-fiction magazines are realities of science. Players take the part of commanders guiding their daring aces through aerial battles inspired by the Second World War. This book includes basic rules and counters to take control of the air forces of any one of five powerful nations to help decide the fate of the Free World.

Luft Krieg uses the same system as the Gear Krieg Wargame.