Operation Valkyrie
The plot was now as ready as it would ever be. Twice in early July Stauffenberg attended Hitler's conferences carrying a bomb in his briefcase. But because the conspirators had decided that Himmler, too, must be assassinated if the planned mobilisation of Operation Valkyrie was to have any chance of success, he had held back at the last minute because Himmler was not present—in fact it was unusual for Himmler to attend military conferences. By 15 July, when Stauffenberg again flew to East Prussia, this condition had been dropped. The plan was for Stauffenberg to plant the briefcase with the bomb in Hitler's conference room with a timer running, excuse himself from the meeting, wait for the explosion, then fly back to Berlin and join the other plotters at the Bendlerblock. Operation Valkyrie would be mobilised, the Reserve Army would take control of Germany and the other Nazi leaders would be arrested. Beck would be appointed head of state, Goerdeler Chancellor and Witzleben commander-in-chief. The plan was ambitious and depended on a run of very good luck, but it was not totally fanciful.