Revealing mistake: During the Flak attack on the B25s Arfy notices Orr's plane going down. The scene cuts to a smoking plane going down at a steep angle, but you can see the plane was flying straight and the film turned at an angle as the colors on the horizon are also at a steep angle.
Continuity mistake: General Dreedle is riding in a Jeep with Colonel Cathcart running alongside. When he stops in front of one plane the plane right behind them has a large number 60 on the tail. When the screen pans out to show him getting off the Jeep the plane behind them now has a large number 68 on the tail.