Regan, Donald Thomas (21 December 1918–10 June 2003), financier, U.S. Treasury secretary, and White House chief of staff, was born in Cambridge, Massachusetts, the son of William Francis Regan, a railroad worker, and Kathleen Ahearn Regan. After attending the Cambridge Latin School, a public high school, he won a scholarship to Harvard University, where he majored in English and graduated in 1940. He enrolled in Harvard Law School, but with Europe embroiled in World War II, Regan abandoned his studies to join the U.S. Marine Corps. Deployed in the Pacific theater, he saw action in five campaigns, including in the Battles of Guadalcanal and Okinawa. When he left the marines in 1946, he had attained the rank of lieutenant colonel....
