Air Slow Flyer

The heroes of these novels are pilots. One, a time traveler from our time, fights on the fronts of World War I and the Civil War. The second is a front-line pilot of the Po-2, who is inexplicably thrown along with his airplane into a distant Middle Ages, at the time when German dog-knights decided to capture Pskov. They scattered... The Po-2 is merely a fragile biplane, but it is armed and quite dangerous.
Two heroes, two different fates. They are united by their love for the Motherland and the desire to protect it from any enemy.