At 20.20, Pitkin's spade suddenly reappears as he leaves the army base.
At 38 minutes, the action takes place after D-Day when all Allied aircraft had alternate black-and-white stripes around the wings and fuselage. The Dakota used for the parachute drop had no such stripes.
At 23 minutes, Mr Grimsdale receives his call up papers. They would not be sent to his place of work.
At 35.30,The dummy that Pitkin stabs and throws on the end of his bayonet moves before he stabs it.
At 17.25, when Pitkin, as a civilian, is detained by the army, he stands on a bed frame and is at eye level with a window. From the outside he is shown, his face appearing and disappearing, as if jumping up on the bed, when in fact all he had to do was stand still.