William Frishe Dean Sr. was a United States Army major general during World War II and the Korean War. He received the Medal of Honor for his actions on July 20 and 21, 1950, during the Battle of Taejon in South Korea. Dean also became the highest ranking American officer captured by an enemy force since the 18 American Army generals captured by Imperial Japan after the fall of the Philippines when he was captured by North Korea during the Korean War.

The Korean War was fought between North Korea and South Korea from 1950 to 1953. It began on 25 June 1950 when North Korea invaded South Korea and ceased after an armistice on 27 July 1953. North Korea was supported by China and the Soviet Union while South Korea was supported by the United States and US-led United Nations (UN) forces.