Question: What’s believed to be the only WWII battle in which U.S. and German troops joined forces to fight the Nazi S.S.?
Answer: The Battle for Castle Itter took place in Tirol, Austria on May 5, 1945, very near the end of the war. U.S. soldiers joined forces with renegade German troops to repulse a Waffen-SS assault on the castle, where elite French political figures were being held prisoner by the Nazis.