The Plot to Kill Hitler

German army officer, Colonel Claus Schenk Graf von Stauffenberg attempted to kill Adolf Hitler by planting a briefcase bomb in a meeting at Hitler's headquarters on 20 July, 1944.

The attack was supposed to be the trigger for a coup against the Nazi regime. We hear from von Stuaffenberg's son, General Berthold Schenk Graf von Stauffenberg.

Photo: Colonel Claus Schenk Graf von Stauffenberg (AFP/Getty images)