Stauffenberg solved that problem by devising Operation Valkyrie but in reality was the cover for a putsch that could be activated by officers of less than senior rank .
Operation Valkyrie is a plan that ostensibly was meant to crush a slave labour uprising .
Stauffenberg solved that problem by devising Operation Valkyrie , a plan that ostensibly was meant to crush a slave labour uprising , but in reality was the cover for a putsch that could be activated by officers of less than senior rank .