It was different to other Hitchcock films I've seen as it was set in an Australian penal colony, not a modern day (modern in the time his films were made) setting.
I can remember vaguely watching 'Odette' with Anna Neagle and Peter Ustinov ....have never been keen on films that centre around wars though tbh.
Hitchcock did make other films which were not set in modern times such as Jamaica Inn.
Hitchcock had intended to make a film called Kaleidoscope in the late 60s. Didn't progress beyond a script and some test footage before being abandoned, it hadn't got to the stage of being cast. Has zero connection with the film of that name which was released in 1966 (Warren Beatty & Susannah York) Hitchcock did have a sense of the macabre and he had intended to make this the most gruesome and violent film ever made (though that was in the 1960s).
I'm no fan of war films either other than those which are closer to being action films such as "Guns of Navarone" and Michael Powell's "49th Parallel".