Calvin DeWitt Jr.

[10] During World War II, DeWitt was first assigned to the New York Port of Embarkation, eventually becoming chief of staff and deputy commander.

[6] After serving as commanding general of the New York Port of Embarkation, DeWitt retired from military service in August 1954.

[5] DeWitt was laid to rest in Arlington National Cemetery, where his wife, parents and all three siblings are also buried.

His sister, Mary Wallace DeWitt (1884–1957), married Robert Moore Blanchard (1874–1959), who served as a colonel in the United States Army Medical Corps; their son, Brigadier General Robert Moore Blanchard Jr. (1909–1999), served during World War II and Korea, and was a 1933 graduate of the United States Military Academy at West Point, New York.

William Radcliffe DeWitt (1792–1867), was a Presbyterian pastor in Harrisburg, Pennsylvania, from 1818 to 1867, and had served in the War of 1812 prior to this.

His paternal uncle, Major William Radcliffe DeWitt Jr. (1827–1891) was a surgeon in the United States Army during the Civil War.

His first cousin, twice removed, William Radcliffe DeWitt V, served in the United States Marine Corps as a Private during the Korean War.

His first cousin, three times removed, Robert George Schoenkopf III, served as a Sergeant in the United States Marine Corps during the Vietnam War.