There Are No Deserters(1970)

August 1944, and a captain in the Greek army in the Middle East, Jason, secretly disembarks on an island with the mission of gathering information on the state of the German defensive positions, in view of the imminent landing of the Allied Forces. To complete his mission, he makes contact with some rebels, but the Germans are aware of his presence and arrest twelve men to force him to surrender. Shortly before the deadline expires, a local man who had been declared a deserter shortly before the war began and had been in hiding, presents himself at his post and is executed, making his wife and son proud.