Boxer involved in Army mutiny

[Brutu]

Anyone remeber a movie that concerned a mutiny in the British Army during war time when one of the Sergents shot a soldier because his tunic button was not fastened properly.
I think it was based on a true story during WWI.
Also I seem to rember the sergent had at one time been a British boxing champion.
It was a rather well known incident.

[dr_devious]

The boxers name was Harry Reeve. There was a drama programme about the mutiny shown on BBC in the mid 80s called "The Monocled Mutineer"

[Brutu]

From what I recall he was actually a miltary police officer and the mutiny took place at Etaples France.