Operation Valkyrie
By 1944, though still relatively young, he held the rank of an Oberstleutnant. He was not stationed near Hitler's headquarters at Wolfsschanze near Rastenburg when the 20 July assassination attempt was carried out, but was in Berlin instead. Unaware that the bomb had failed to kill Hitler, Bernadis was responsible for the order that set Operation Valkyrie in motion. That same evening, he was arrested by the Gestapo. On 8 August, he was sentenced to death by the German "People's Court" ("Volksgerichtshof") and executed the same day.