The Dirty Dozen: The Fatal Mission (1988) on Netflix

Plot summary

Major Wright leads a commando group into Nazi-occupied Denmark to meet the informant Carl Ludwig, who is shot by a German patrol before he can explain the words 2420. In London, Wright hears the rest from Major General Worden and Lieutenant Carol Campbell: SS General Kurt Richter has chosen influential Nazis to gather in Istanbul and build a Fourth Reich. Wright is ordered to pull twelve men out of Forbes Road Military Prison and wreck the journey. Sergeant Holt runs the new dozen through parachute jumps at night, and a recruit dies when his chute fails. Wright tells his superiors a traitor among the squad is passing information to the Germans, then has the pilots drop the team in Skopje instead of the expected zone.