Before the 1 September 1939 attack on Poland, Adolf Hitler's personal bodyguard unit came from two distinct, independent units based in Berlin: the Chancellery Guards, assigned for the purpose by the army, and the Leibstandarte SS Adolf Hitler ("SS bodyguard regiment 'Adolf Hitler'," often abbreviated to LSSAH), which replaced the Chancellery Guards. When hostilities started, Hitler ordered the LSSAH to participate in the campaign against Poland, leaving him with no personal bodyguard unit (except for a small formation from the Leibstandarte) keep in Berlin.