The plan was known as Operation Valkyrie. The idea was that, once Hitler was dead, the military would claim that the assassination was part of an attempted coup by the Nazi Party and the Reserve Army would seize key installations in Berlin and arrest high-ranking Nazi leadership.
The plan was going perfectly untill they decided to stop Stauffenberg, the Hauptmann behind Operation Valkyrie, communications and obviously, 1 key moment, Hitler survived the bomb and didn't die.
