Linge was one of many soldiers, servants, secretaries, and officers who moved into the Reich Chancellery and "Führerbunker" in Berlin in 1945. There he continued as Hitler's chief valet and protocol officer and was one of those who closely witnessed the last days of Hitler's life during the Battle of Berlin. He was also Hitler's personal military orderly. Linge delivered messages to Hitler and escorted people in to meet with Hitler. In addition, after Hitler's personal physician Theodor Morell left Berlin on 23 April, Linge and Dr. Werner Haase administered to Hitler the prepared medicine which had been left behind.