Adolf Hitler and Ludendorff continue advancing together, and manage to take the defense ministry in Munich.
This action ignites the powder keg as news of the uprising spreads, and impromptu fascist militias take towns across Germany. The Bavarian Government surrenders to the Nazis who set up a base of operations in Munich, coordinating via radio the rapidly growing militias fighting the Reichswehr and elements of the former Freikorps that fought for the Weimar state.
Most of the old freikorps, and (later) even men from the Reichswehr now fought for the NSDAP.
Town after town falls to the Nazis, major cities are abandoned as Hans von Seekt calls for a defensive line on the Elbe, hoping to bleed the militias white in the defense of Berlin. This backfired because the orderless cities were now free to join in the rebellion, and Hitler's ranks soared.
The crossing of the Elbe at the battle of Magdeburg sealed the Weimar government's fate. Hitler and friends march triumphantly into Berlin and set up an impromptu "People's Government", with Hitler as "Reichsfuhrer and general of the armies" (head of state and commander-in-chief of the army) and Ludendorff as "Reichsregler" (head of government and carrier out of Hitler and the Nazi's economic and social policy). Von Seekt is captured alive and allowed a place in the new regime as Hitler's military advisor. After weighing his options, Von Seekt decides to accept.
The new government is recognized by the allies (who, throughout the civil war, adopted a non-intervention policy). Hitler, knowing that the allies are still disillusioned, and that the Great War was just as alive in their memories as it was in his, decides to begin rearmament.
It proceeds slowly as Hitler's centralization begins to improve the economy.
First it was conscription, then artillery, then an air force (built in the guise of commercial intent), and finally capital ships and an expansion of the Reichsmarine.
While this is happening, the Allies turn a blind eye and (under the new government of Stanley Baldwin) quickly adopt a policy of appeasement.
Hitler annexes the Saarland and reoccupies the Rhineland in 1926, while the newly renamed "Wehrmacht" becomes stronger and stronger by the day.
In 1927, Germany officially allies with Italy in the “Rome-Berlin Axis”.