When Americans and Nazis fought together? Yes, this actually happened. In May 1945, during the final desperate hours of WW2, the enemy of my enemy became an unlikely ally. A small group of American soldiers and German Wehrmacht troops joined forces to survive a brutal, ruthless attack by the SS at Castle Itter. In this video, we uncover the true nightmare and absolute tension of the most bizarre battle history almost forgot. It was a fight for survival where uniforms no longer mattered. What you will discover: The pure terror inside the castle walls. How mortal enemies teamed up under heavy fire. The shocking outcome of this impossible alliance. If you like discovering the most intense and controversial events they didn't teach you in school, subscribe to Action History. Drop a like if this story blew your mind!