My Lai.

Buffalo Soldiers, the nickname given to African-American cavalrymen by the native Americans they fought, were the first peacetime all-black regiments in the regular United States army. These soldiers regularly confronted racial prejudice from other Army members and civilians but were an essential part of American victories during the Indian Wars of the late nineteenth and early twentieth centuries. “[Buffalo soldiers of the 25th Infantry, some wearing buffalo robes, Ft. Keogh, Montana] / Chr. Barthelmess, photographer, Fort Keogh, Montana,” 1890. Library of Congress.

You may say that it isn ’ t necessary to read every last book. Well, it ’ s also true that in war you don ’ t have to kill every last soldier, but we still need every one of them. — General Stumm von Bordwehr, in Robert Musil, The Man without Qualities