State service Baltimore voters elected Bruce to represent them in the
Maryland House of Delegates (1924–1926). Much later he defeated a prominent critic of his friend
Harry Flood Byrd in the 1939 Democratic primary. He represented
Charlotte County in the
Virginia House of Delegates for two terms (1940–1942), as well as renovated the now-historic home his grandfather built, as discussed below.
Interwar philanthropist and author Although Bruce's first diplomatic post, as vice-consul in Rome, was cut short in 1927 due to his wife's ill health, upon returning to the United States, Bruce lived in Washington and New York, where he dabbled on Wall Street and sat on various corporate boards. He also helped his father-in-law create the
National Gallery of Art, of which he would serve as president from 1939-1945. Bruce also published
Seven Pillars of the Republic in 1936, a book of biographical essays on American Presidents from George Washington to Andrew Jackson. He would expand it twice. In 1939 he expanded it to cover all presidents through Abraham Lincoln, under the revised title
Revolution to Reconstruction, and in 1962 revised them as
Sixteen American Presidents. He held the rank of major, and later lieutenant colonel in the Army Air Corps. After leaving the OSS at the end of World War II, and before entering the diplomatic field, in 1948–1949 David Bruce served as assistant secretary of commerce and oversaw American aid to France with the
Economic Cooperation Administration which administered the
Marshall Plan.
Diplomatic service Bruce served as the
United States Ambassador to France from 1949 to 1952, then briefly as undersecretary of state during the Truman administration (1952-1953), but came to dislike the Washington bureaucracy. During the Nixon administration, Bruce was an American envoy at the Paris peace talks between the United States and
North Vietnam in 1970 and 1971. Bruce also served as the first United States emissary to the
People's Republic of China from 1973 to 1974. He was the
ambassador to the North Atlantic Treaty Organization from late 1974 to 1976. ==Personal life and death==