One of the best war movies ever was “Breaker Morant” from the 1970s. It’s an historical account of 3 Brits being tried for war crimes in the Boer war in South Africa. Must see.
More of a "courtroom drama" than war movie, but it is one of the best movies ever made.
“Paths to Glory” is another one.
Ever see “The Light Horsemen” An Australian made movie about the 4th & 12th Light Horse Regiments cavalry charge against the Turks at Beersheba during WWI. Like Gallipoli and Breaker Morant, shows the Australian’s view of the Brits disregard for the lives of Australian soldiers.
Not Brits, the three were Australians.