On 23 April 1945, Hitler's personal physician Theodor Morell and several others left Berlin by aircraft for the Obersalzberg leaving behind medications prepared for Hitler, which Haase and Heinz Linge, Hitler's valet, administered during Hitler's last week of life. SS physician Ludwig Stumpfegger distributed cyanide capsules to the various military adjutants, secretaries, and staff in the bunker. Doubting the efficacy of the cyanide capsules, Hitler ordered Haase summoned to the "Führerbunker" to test one on his dog Blondi on 29 April. A cyanide capsule was crushed in the mouth of the dog, which died as a result. Hitler, in conversations with Haase during this timeframe, asked the doctor for a recommended method of suicide. Haase instructed Hitler to bite down on a cyanide capsule while shooting himself in the head. Haase remained in the "Führerbunker" until Hitler's suicide the following afternoon. Haase then returned to his work at the emergency casualty station. In the seven days they worked together, Schenck and Haase performed some "three hundred and seventy operations". Haase, Helmut Kunz and two nurses, Erna Flegel and Liselotte Chervinska were taken prisoner there by Soviet Red Army troops on 2 May.