William E. Boyer, 75, a retired Air Force colonel who became a teacher at the Columbia Preparatory School in Washington, died of Alzheimer's disease Oct. 23 at the Annapolis Convalescent Center.

Col. Boyer, who lived in Annapolis, was born in Richmond, Va. He graduated from the U.S. Military Academy at West Point in 1929 and became a pilot. In 1939, he took a master's degree in history at St. Mary's College in San Antonio, Tex.

In World War II, he served in Italy and France. He transferred to the Air Force when that service was formed. His later assignments included command of an Air Group in Europe and a tour at Purdue University, where he established the first Air Force Reserve Officers Training Corps. He was stationed in Washington when he retired in 1957.

In 1960, Col. Boyer joined the faculty at Columbia Preparatory School. He earned a master's degree in education at Johns Hopkins University in 1963 and retired from Columbia in 1972.

Survivors include his wife, Kathryn of Annapolis; a daughter, Kathryn Adams of Easton, Md.; a sister, Mary Sheets of Fort Myers, Fla.; a brother, Col. O.R. Boyer of Alexandria, and two grandchildren.