Fleet Admiral William Halsey Jr. was a prominent United States Navy officer during World War II. Born on October 30, 1882, he played a crucial role in several key naval battles in the Pacific Theater, including the Battle of Midway and the Battle of Leyte Gulf. Halsey was known for his aggressive tactics and leadership style, which earned him the nickname "Bull Halsey." Halsey was promoted to Fleet Admiral in December 1945, a rank that is reserved for only a few individuals in U.S. history. After the war, he continued to serve in various capacities, including as a military advisor and in public roles, until his retirement in 1947. He passed away on August 16, 1959.