During the first battle between the elite Punjabi Guards and the Germans, a Punjabi soldier is seen using the PIAT (Projector Infantry Anti-Tank) Rocket Launcher. But the PIAT was introduced in 1943 while the movie is set during the 1940
The movie features the German airship Hindenburg which was destroyed in 1937 while the movie is set in 1940
A German tank destroys The Cenotaph to gain access to Downing Street. The Cenotaph is not located at the junction of Downing Street & Whitehall, it is further down the street.