Valkyrie

'Based on actual events, a plot to assassinate Hitler is unfurled during the height of WWII.'

A proud military man, Colonel Claus von Stauffenberg is a loyal officer who serves his country all the while hoping that someone will find a way to stop Hitler before Europe and Germany are destroyed. Realizing that time is running out, he decides that he must take action himself and joins the German resistance. Armed with a cunning strategy to use Hitler's own emergency plan--known as Operation Valkyrie--these men plot to assassinate the dictator and over-throw his Nazi government from the inside. With everything in place, with the future of the world, the fate of millions and the lives of his wife and children hanging in the balance, Stauffenberg is thrust from being one of many who oppose Hitler to the one who must kill Hitler himself.

Valkyrie is a 2008 historical thriller film set in Nazi Germany during World War II. The film depicts the 20 July plot by German army officers to assassinate Adolf Hitler and to use the Operation Valkyrie national emergency plan to take control of the country. Valkyrie was directed by Bryan Singer under the American studio United Artists, and the film stars Tom Cruise as Colonel Claus von Stauffenberg, one of the key plotters. Kenneth Branagh, Bill Nighy, Eddie Izzard, Terence Stamp and Tom Wilkinson are also featured as fellow plotters.

Source: Wikipedia