Isaac Davis White (March 6, 1901 – June 11, 1990) commanded the U.S. Army, Pacific (USARPAC) from July 1957 to March 1961. He gained his commission into the Cavalry in 1923 and went on to serve in World War II and the Korean War. Because of his extensive experience in tank warfare, Armor magazine dubbed him "Mr. Armor" upon his retirement.[citation needed]