The Fifth Day of Peace (1970)

"One of the most bizarre episodes in the annals of "military justice""

Based on a true story. Near the end of World War II, two German deserters are put in an Allied POW camp. When a rigid and militaristic German colonel learns about their desertion, he wants them court-martialed, even if the war is over. The uninterested Allied officers oblige him, and the two men face the firing squad on "the fifth day of peace".