“Of the two classes of Prussian officer, the bull-necked and the wasp-waisted, he belonged to the second. Monocled and effete in appearance, cold and distant in manner, he concentrated with such single-mindedness on his profession that when an aide, at the end of an all-night staff ride in East Prussia, pointed out to him the beauty of the river Pregel sparkling in the rising sun, the General gave a brief, hard look and replied, 'An unimportant obstacle.”