During World War II, he commanded a series of PT boats in the Pacific theater and earned the Navy and Marine Corps Medal for his service. After the war, Kennedy represented the Massachusetts's 11th congressional district in the U.S. House of Representatives from 1947 to 1953. He was subsequently elected to the U.S. Senate and served as the junior Senator from Massachusetts from 1953 to 1960. While in the Senate, Kennedy published his book, Profiles in Courage, which won a Pulitzer Prize. Young John attended the Riverdale Country School−a private school for boys−from 5th to 7th grade, and was a member of Boy Scout Troop 2 in Bronxville, New York. His brother-in-law, Sargent Shriver, was its first director.