Starting in the winter of 1941–42, Olbricht developed the plan for
Operation Valkyrie, a General Staff plan which was ostensibly to be used to put down internal unrest, but was in fact a blueprint for a ''
coup d'état''. Together with the resistance circles around Colonel-General
Ludwig Beck,
Carl Friedrich Goerdeler and Major-General
Henning von Tresckow, he worked to find a means of assassinating
Adolf Hitler and bring down the Nazi regime. In 1943, he asked that Colonel
Claus von Stauffenberg come to work at his office. Stauffenberg would later be the key person in the assassination attempt, with the task of planting the bomb near Hitler. On the day of the attempted coup, 20 July 1944, Olbricht and Colonel
Albrecht Mertz von Quirnheim initiated Operation Valkyrie by mobilizing the
Replacement Army. It eventually became clear the briefcase bomb had failed to kill Hitler however, so the plan to seize key sites in Berlin using units from the reserve army, began to falter. Many consider one of the factors which prevented the coup, was the failure of troops to gain control of communications into and out of Berlin. Hitler and his commanders in the Wolfsschanze were able to broadcast a speech after the coup, which led to the quick demise of the coup as a whole. As a result, the Nazi leadership was able to regain control, using its own loyal troops, within a few hours.
Arrest and execution At 21:00, Olbricht was arrested at his headquarters in the
Bendlerblock by soldiers from the Berlin garrison. Later that evening, Colonel-General
Friedrich Fromm held a hastily arranged
court martial, supposedly in an attempt to protect himself from being exposed as a silent conspirator. Olbricht, Quirnheim, Stauffenberg, and his aide
Werner von Haeften were then taken outside to the courtyard and executed by
firing squad, against Hitler's orders to take the would-be assassins alive (those who were captured alive received more painful and prolonged means of execution). Olbricht was the first of the four to be shot. ==Awards ==