Throughout history, elite and unchecked forces have a habit of subverting the rule of their superiors - for instance, the Praetorian Guard. Could Himmler's SS have overthrown Hitler? Was there ever an attempt or discussion of a change of power by anyone but fringe revolutionaries like Colonel Stauffenberg? If so, how was it planned to occur? As many are familiar, most German troops of any capacity swore a solemn oath to Adolf Hitler, an oath of unquestioning allegiance. What was the real level of loyalty towards Hitler like in the armed forces, the SS, and the Gestapo?
Recall the movie Operation Valkyrie? The events outlined there did actually happen. It was a plan to overthrow the Hitler government from inside the military by killing Hitler and then pretending all of this was a a Coup d'État by the SS.