Daniel J. Callaghan, American admiral, Medal of Honor recipient (d. 1942)
Daniel Judson Callaghan (July 26, 1890 – November 13, 1942) was a United States Navy officer who received the Medal of Honor posthumously for his actions during the Naval Battle of Guadalcanal. In a career spanning three decades, he served his country in two wars. Callaghan served on several ships during his first 20 years of service, including escort duties during World War I, and also filled some shore-based administrative roles. He later came to the attention of President Franklin D. Roosevelt, who appointed Callaghan as his naval aide in 1938. A few years later, he returned to command duties during the early stages of World War II. Callaghan was killed by an enemy shell on the bridge of his flagship, USS San Francisco, during a surface action against a larger Japanese force off Savo Island. The battle ended in a strategic victory for the Allied side.