 Following the failed Beer Hall Putsch of 9 November 1923, Röhm, Hitler, General Ludendorff, Lieutenant Colonel Hermann Kriebel and six others were tried in February 1924 for high treason.Röhm was found guilty and sentenced to fifteen months in prison, but the sentence was suspended and he was placed on probation.Hitler was found guilty and sentenced to five years' imprisonment, but served only nine months at Landsberg Prison (under permissively lenient conditions), during which time he dictated most of the first volume of "Mein Kampf" ("My Struggle").