as either the Kampfzeit (the time of struggle) or the Kampfjahre (years of struggle). Early steps (1918–1924) Adolf Hitler became involved with the fledgling German Workers Party – which he would later transform into the Nazi Party – after the First World War, and set the violent tone of the movement early, by forming the Sturmabteilung (SA) paramilitary. Catholic Bavaria resented rule from Protestant Berlin, and Hitler at first saw revolution in Bavaria as a means to power. An early attempt at a coup d'état, the 1923 Beer Hall Putsch in Munich, proved fruitless, however, and Hitler was imprisoned for leading the putsch. He used this time to write Mein Kampf, in which he argued that effeminate Jewish–Christian ethics were enfeebling Europe, and that Germany was in need of an uncompromising strongman to restore itself and build an empire. Learning from the failed coup, he decided on the tactic of pursuing power through legal means rather than seizing control of the government by force against the state and instead proclaimed a strictly legal course. From Armistice (November 1918) to party membership (September 1919) In 1914, after being granted permission from King Ludwig III of Bavaria, the 25-year-old Austrian-born Hitler enlisted in a Bavarian regiment of the German Army, although he was not yet a German citizen. For over four years (August 1914 – November 1918), Germany was a major participant in World War I. After fighting on the Western Front ended in November 1918, Hitler was discharged on 19 November from the Pasewalk hospital and returned to Munich, which at the time was in a state of socialist upheaval. Arriving on 21 November, he was assigned to 7th Company of the 1st Replacement Battalion of the 2nd Infantry Regiment. In December he was reassigned to a prisoner-of-war camp in Traunstein as a guard. He remained there until the camp dissolved in January 1919, after which he returned to Munich and spent a couple weeks on guard duty at the city's main train station (Hauptbahnhof) through which soldiers had been traveling. During this time a number of notable Germans were assassinated, including socialist Kurt Eisner, who was shot dead by a German nationalist on 21 February 1919. His rival Erhard Auer was also wounded in an attack. Other acts of violence were the killings of both Major Paul Ritter von Jahreiß and the conservative MP Heinrich Osel. In this political chaos