ヴァルキューレ作戦
Olbricht now put forward a new strategy for staging a coup against Hitler. The Reserve Army had an operational plan called Operation Valkyrie, which was to be used if the disruption caused by the Allied bombing of German cities caused a breakdown in law and order, or a rising by the millions of slave labourers from occupied countries now being used in German factories. Olbricht suggested that this plan could be used to mobilise the Reserve Army to stage a coup. In the autumn of 1943, Tresckow revised Valkyrie plan and drafted supplemental orders to take control of German cities, disarm the SS and arrest the Nazi leadership after Hitler's assassination. Operation Valkyrie could only be put into effect by General Friedrich Fromm, commander of the Reserve Army, so he must either be won over to the conspiracy or in some way neutralised if the plan was to succeed. Fromm, like many senior officers, knew about the military conspiracies against Hitler but neither supported them nor reported them to the Gestapo.