His mother, Princess Walburga, commented that: “… he was boundlessly disillusioned and boundlessly disappointed. In 1943 he contemplated the thought of shooting Hitler. It was only out of sense of honor and duty that Heinrich went on fighting, carried along by the ambition to overtake Major Lent in his score of enemy aircraft shot down”.

In her memoirs, Tatiana von Metternich reported that Wittgenstein planned to kill Hitler after the ceremony at which he received his Knight’s Cross of the Iron Cross in 1943. He said, “I am not married, I have no children—I am expendable. He will receive me personally. Who else among us can ever get as near to him?”