Factual error: Alice says she wants to thank "The U.S. Air Force." There was no such entity during WWII. What later became the USAF was then known as the U.S. Army Air Corps. (00:23:20)
Show Me a Hero, I'll Show You a Bum - S2-E7
Factual error: The 1943 London air field is crowded with P-51 Mustangs - planes that weren't introduced in Europe until 1944.
Continuity mistake: Gallagher looks out at his wrecked B17 from the ruins, and the aircraft's tail section is facing the camera. Several minutes later, he looks again from the same vantage point, and the burning plane's nose and engines are now facing the camera. (00:11:35)
Factual error: The Russian church has Latin crosses inside and out. It should have the more ornate Orthodox crosses, which are quite different in design.
Show Me a Hero, I'll Show You a Bum - S2-E7
Factual error: It's 1943, but Kamanski's flight jacket sports a 50-star flag. The flag should, of course, have 48 stars.
Factual error: It's an error that plagued many episodes, but here again, the flight jackets hanging behind the bomber pilots have 50-star flag patches on the shoulders. (00:30:25)
