-Colonel Claus Von Stuffenberg*
-General Friedrich Olbricht*
-Major General Henning Von Treskow (Commited Suicide)
-Genreal of Communications Erich Fellbiebel*
-Colonel General Ludwig Beck (Attempted suicide)
NOTE: this is a very small list, many more where involved.
The plan was taken over by Colonel Claus Von Stauffenberg after the leading officer was arrested by the Gestapo, the Conspirators had been planning for months before. On July 18 1994 Stauffenberg and his Aide where called to the wolf's lair (Hitler Private bunker) for a conferance, the chance to detonate the bombs never presented it self.
July 19 1944: Stauffenberg and Wenrer Von Haeften and called of by Olbricht before the bomb is armed. (reserve army was put on alert by Olbricht)
July 20 1944: One bomb is detonated by stauffenberg and shortly after Felllegiebel (Commanding Wolf's Lair Communications officer) Cuts all the lines. Staufenberg and Haeften fly back to Berlin to begin the take over of the government (Unknown Hitler is still alive)
Upon arrival Olbricht initiates Operation Valkyrie (Hitler's edited contingency plan) under General Fromm (Against the plot) and the government begins to be siezed by Stauffenberg
When the Conspirators learn Hitler is alive and the Army is comming to arrest them, they try to evacuate Beck ( who would become Chancellor), how ever a furious Fromm arrest them and almost all of them are executed by firing squad outside the Benderblock (Fromm was executed a few months later) Stauffenberg was reported to scream "Es lebe unser heiliges Deutschland!" ("Long live our sacred Germany!") before being shot.
Almost 5,000 others unassociated with the plot (Including Fieldmarshell Erwin Rommel) where executed in connection.
Today the execution site holds a memorial to the conspirators.
The 2008 film "Valkyrie" (Starring Tom Cruise) is about the July 20th 1944 plot.