Marshall resigned as Secretary of State because of ill health on January 7, 1949. He was severely exhausted throughout his tenure in the position. Acheson in late 1947 said he was underperforming like "a four-engine bomber going only on one engine." Truman named him to the largely honorific positions of chairman of the American Battle Monuments Commission and president of the American National Red Cross. He received the 1953 Nobel Peace Prize for his post-war work, despite the criticism that he was a warrior not a pacifist.