 He was active in the Marine Corps Historical Foundation, where he received a Certificate of Appreciation by then-Commandant Robert H. Barrow for his contributions to the Oral History Program.In 1991, English was diagnosed with Alzheimer's disease, and on September 29, 2005, he died at the age of 90 at the Silverado Senior Living assisted living community in San Diego, California.He is survived by his wife Eleanor R. English and three children.