" I saw then that he had lost touch with reality. He lived in a fantasy world of maps and flags.’ For Behr, who had been an enthusiastic and ‘nationalistic young German officer’, the revelation came as a shock. ‘It was the end of all my illusions about Hitler. I was convinced that we would now lose the war. "

― Antony Beevor , Stalingrad: The Fateful Siege, 1942–1943