Perkeo
Banned
The Reichswehr was too small to stop paramilitary groups. The Reichswehr had only 100,000 men (plus another 15,000 for the Navy). The SA was about 2 million men strong.
But how many of those two million had guns, let alone heavy weapons? How well were they trained and organized? What about the police? How many people can both sides recruit?
IMO if, and once again I say if, the Reichswehr is against the Nazis, the republic is probably saved.