Valkyrie — Poland
July 20 1944 — Colonel Stauffenberg plants the bomb at Hitler's Wolf's Lair headquarters in East Prussia.
The Wolf's Lair was Hitler's primary Eastern Front headquarters, a vast fortified complex in the forests of East Prussia. The bomb detonated at 12:42 pm on July 20, 1944, killing four people — but a table leg deflected the blast from Hitler, who survived with minor injuries.