Capitaine Conan (1996)

I haven't seen this French movie but from the trailer it looks well worth tracking down. It's a film by Tavernier set in the First World war with what looks like some excellent action sequences in an unusual theatre - the Balkans. Imdb says of the plot Bulgaria near the end of World War I: Conan, warrior and wolf, leads a band of 50 ruthless French fighters who love hand-to-hand combat. Their motto: "We forgot to take prisoners, Captain." At war's end, the unit goes to Bucharest, where Conan tries to keep them out of trouble, defends them when they behave as warriors, and finds he's unsuited for peacetime. His friendship with Norbert, a teacher turned lieutenant, is tested when Norbert accepts a job as court-martial prosecutor because he's learned that Conan will be facing charges and he wants to protect his friend. When they are sent to the Russian border to fight Bolsheviks, Conan is back in his element and Norbert is off the hook