The liaison officer in the military district XX at the time was Lieutenant Colonel Hasso von Boehmer, who by his friend Henning von Tresckow for his resistance to Adolf Hitler, recruited the brothers Stauffenberg to carry out the assassination of Hitler. On the day of the assassination attempt on Adolf Hitler (20 July 1944) Keitel was on an inspection tour in his command area. As first general staff officer, Keitel took Boehmer from the Berlin Bendlerblock and a telegram to Keitel from the conspirators and prompted the first steps. Keitel then heard over the radio that the attack had failed and he returned immediately to Danzig. He confirmed by a telephone call to his brother Wilhelm Keitel that Hitler was alive. Boehmer was taken before the People's Court and executed in 1945.