 Following the end of the war, Weber was absorbed into the Provisional Reichswehr (Vorläufige Reichswehr).On 16 June 1920 he was promoted to Generalleutnant and appointed commander of Military District (Wehrkreis) II.After the formation of the Reichswehr, on 1 October 1920 he was appointed commanding officer of the 2nd Division, based in Stettin.