Revealing mistake: The shot in the station is somewhat revealing, not only a modern diesel train (as already reported) in 1914 but also a third electric rail. (01:05:15)
Oh! What a Lovely War (1969)
1 revealing mistake - chronological order
Directed by: Richard Attenborough
Starring: Colin Farrell, John Rae, Malcolm McFee, Wendy Allnutt
Factual error: The sign very blatantly says 'World War One'. They didn't call it World War One at the time - they didn't know there was going to be another one. Similar to the old thing about coins having BC on them when they had no idea Christ was coming.
Field Marshal Sir Douglas Haig: Grant us victory, O Lord, before the Americans get here.