 Complete the following phrase:  The only residents of Wilhelmstraße 77 were Hitler and his bodyguards, adjutants, orderlies and servants. It is unknown if the Vorbunker was used before January 1945. Hitler transferred his headquarters to the Führerbunker in Berlin on 16 January 1945, where he along with his influential private secretary, Reichsleiter Martin Bormann and others, remained until the end of April. Thereafter, the Vorbunker was used by various military officers and housed men from Hitlers personal bodyguard. In April 1945, as the 