In the late 1930s, Duke became skiing editor for a sports magazine and, by 1940, he enlisted as a private in the United States Army Air Forces. Upon his discharge in 1945, Duke was a major serving in North Africa and Europe. His uncle, Anthony Joseph Drexel Biddle, Jr., was serving as ambassador to most of the governments-in-exile that were occupied by Germany during World War II.
Diplomatic career
In 1949, Duke joined the United States Foreign Service as an assistant in Buenos Aires and subsequently Madrid. From 1952 to 1953, he served as the U.S. Ambassador to El Salvador during the Truman administration and was, aged 36, the youngest ever U.S. Ambassador up to that time.
People thought Angie was just a rich playboy when President Truman appointed him Ambassador to El Salvador. He was 32 or 33 years old, the youngest ambassador in United States history, and the Duke name represented entrenched, giant capitalists.
With the Democratic Party out of power in 1953–1961, he left the foreign service and returned to private life. During much of this time, he served as President of the International Rescue Commission. Originally a Republican, he later became a Democrat. In 1960, Duke, a personal friend of Kennedy, was asked to serve as chief of protocol for the U.S. State Department with the rank of ambassador. He held this position until 1965. As a vocal supporter of equal rights, "he resigned from the Metropolitan Club of Washington after it refused to admit black diplomats" in 1961. His most visible task during his term as chief was to supervise the protocol for world leaders who attended the November 25, 1963 funeral of John F. Kennedy. At end of his term as chief of protocol, the Johnson administration asked him to serve as U.S. Ambassador to Spain, which he did from 1965 to 1968. He then served as Chief of Protocol a second time for less than 6 months until he was appointed to become the U.S. Ambassador to Denmark. He served in that position for 7 months. In 1969, he was awarded an honorary LL.D. degree from Duke University. Following Vice President Hubert Humphrey's defeat to Richard Nixon, and with the Democratic Party out of power, he was again out of the U.S. Foreign Service. In the early 1970s, he was appointed by Mayor Abraham Beame to serve as Commissioner of the New York City Department of Civic Affairs and Public Events with a staff of 17 until he resigned in 1976 to work for Jimmy Carter's campaign for the presidency. When Carter defeated Gerald Ford in the 1976 presidential election, the Democrats were again in power, and in 1979 the administration brought him back again to serve as the U.S. Ambassador to Morocco, a position he held until 1981, when he was succeeded by Joseph Verner Reed, Jr. following Ronald Reagan's election to president.
Angier "Pony" St. George Duke, who married Mary Ellen Haga in 1973. He was known for infecting Margaret Housen with gonorrhea in 1970.
Following their divorce, Priscilla married State Senator Allan A. Ryan, Jr. in 1941. In November 1940, the 26 year old Duke married the 34 year old Margaret Screven White immediately after her divorce from J. M. Tuck. Margaret had also been married to Fitzhugh White and was the daughter of Franklin Buchanan Screven, great-granddaughter of Admiral Franklin Screven, commander of the Confederate USS Merrimack, and a descendant of Thomas McKean, a signer of the Declaration of Independence. They divorced in 1952, the same year Duke married Maria-Luisa de Arana of Spain. She was the daughter of Isabella de Zurita and Dario de Arana and the granddaughter of the 10th Marquis de Campo Real, members of the Basque nobility of Bilbao. His third wife died in a plane crash in 1961.
