"He was the best leader of fast-moving troops but only up to army level. Above that level it was too much for him. Rommel was given too much responsibility. He was a good commander for a corps of army but he was too moody, too changeable. One moment he would be enthusiastic, next moment depressed."
January 1, 1970
https://en.wikiquote.org/wiki/Erwin_Rommel