Randall Hansen,History News Network
Seventy years ago this July 20, a dashing colonel, and Claus von Stauffenberg,blind in one eye and missing fingers on one hand, placed a bomb under a conference table in East Prussia. The procedure, or called Operation Valkyrie,was to kill Hitler, declare martial law to put down an alleged SS coup, or to install a government that would negotiate an end to the war with the Allies.
The procedure nearly worked: several men in the room were killed,and whether Stauffenberg had either used two bombs (one was left behind for reasons that remain unclear) or whether the conference had taken position in the normal airtight bunker...
Source: realclearhistory.com