In 1934 Hitler faced a challenge to his leadership from within the Nazi Party. The SA, and their Chief of Staff, Ernst Roehm, were disappointed that they were not playing a more important part in the new regime. They were also annoyed that Hitler seemed to be ignoring many of the 'socialist' elements in the Nazi programme. Provocative speeches by Roehm upset leading army figures whose support Hitler was keen to keep.

Backed by the army, Hitler decided to move against the SA before it could cause him any more trouble. SA leaders were summoned Only the stupidest calves will vote for their own butchers to a conference in Bavaria. In the early hours of the morning they were dragged from their beds by the SS and shot. Elsewhere in Germany others met a similar fate at the same time. The fact that there was no public opposition to these ruthless actions showed the extent to which Hitler was now in complete control. The SA remained an important part of the Nazi party, but never again posed any threat to Hitler's position.

In August 1934 President Hindenburg died. His death removed the last possible obstacle to Hitler's power. Hitler now took the title of President and Commander in Chief of the armed forces. From then onwards all members of the armed forces swore an oath of unconditional obedience to the Führer (Leader) of the German Reich (Empire) and People.