Has anyone has seen the film "Sweet Liberty" starring Alan Alda and Michael Cane? No military vehicles in it, unless you count some cavalry horses!
It is a film about making a film about the US War of independance. Alan Alda, the writer of the 'book' the 'Film' is based on, is disgusted with the lack of historical accuracy in the film being made. The director tells him that there are three rules used by film makers in any film:-
"1) Defy authority
2) Destroy property
3) Take peoples clothes off
That's what the kids want to see"
How true that seems with so many films that are made. They don't care if the vehicles are wrong, if the buttons are on the wrong side, if the guns are too modern. All they want is to follow those three basic rules, occasionally with a story thrown in too, and then get as many people in through the doors to see it as possible.
The lack of correct vehicles in 1940-70's films is understandable because of availability, especially with German vehicles, and 99% of any viewers, particularly in the 1950's and 60's, wouldn't care or know if the wrong era or nationality of vehicles were used. For any enthusiast, the wrong plane, car, ship, MV etc, stands out like a sore thumb. In most cases, it isn't worth the effort to get it right. It's all about making money these days, not making accurate films.
The 1989 'Memphis Belle' film used P-51 Mustang fighters to escort the B-17's, even though at the time the film is set, RAF Spitfires would be escorting the Bombers. Roger Freeman ( technical advisor ) was overruled re Spitfires being used as the director thought that the audiance would associate the Spit with the Battle of Britain and would get confused.
Steve