Watch Operation Valkyrie: The Stauffenberg Plot to Kill Hitler (2008) : Full Movie Online Free July, 1944. As WWII raged on, a group of conspirators, led by Claus von Stauffenberg, plotted to assassinate Hitler and end his reign of terror. Using rare color footage, painstakingly recreated dramatizations, detailed CG reconstructions and exclusive interviews with leading historians, this thrilling documentary presents the definitive record of what happened before, during and after these pivotal events.