out between the Nazis and the police; sixteen marchers and four police officers were killed. Hitler was arrested on 11 November. Hess and some SA men had taken a few of the dignitaries hostage on the night of the 8th, driving them to a house about from Munich. When Hess left briefly to make a phone call the next day, the hostages convinced the driver to help them escape. Hess, stranded, called Ilse Pröhl, who brought him a bicycle so he could return to Munich. He went to stay with the Haushofers and then fled to Austria, but they convinced him to return. He was arrested and sentenced to 18 months in prison for his role in the attempted coup, which later became known as the Beer Hall Putsch. Hitler was sentenced to five years imprisonment, and the Nazi Party and SA were both outlawed. Both men were incarcerated in Landsberg Prison, where Hitler soon began work on his memoir, Mein Kampf ("My Struggle"), which he dictated to fellow prisoners Hess and Emil Maurice. Edited by publisher Max Amann, Hess and others, the work was published in two parts in 1925 and 1926. It was later released in a single volume, which became a best-seller after 1930. This book, with its message of violent antisemitism, became the foundation of the political platform of the Nazi Party. Hitler was released on parole on 20 December 1924 and Hess ten days later. The ban on the Nazi Party and SA was lifted in February 1925, and the party grew to 100,000 members in 1928 and 150,000 in 1929. They received only 2.6 per cent of the vote in the 1928 election, but support increased steadily up until the seizure of power in 1933. Hitler named Hess his private secretary in April 1925 at a salary of 500 Reichsmarks per month, and named him as personal adjutant on 20 July 1929. Hess accompanied Hitler to speaking engagements around the country and became his friend and confidante. Hess was one of the few people who could meet with Hitler at any time without an appointment. His influence in the Party continued to grow. On 15 December 1932 Hess was named head of the Party Liaison Staff and Chairman of the Party Central Political Commission. Retaining his interest in flying after the end of his active military career, Hess obtained his private pilot's licence on