Oscar E. “Ed” Gilbert Jr. served as an artilleryman and NCO instructor in the Marine Corps Reserve before earning a Ph.D., working for the Geological Survey in Alabama, and teaching at Auburn University. He enjoyed a three-decade career in worldwide oil exploration. Ed was the author of many books, including Marine Corps Tank Battles in Korea (2006), and Marine Corps Tank Battles in Vietnam (2008). He was awarded the 2016 General Wallace M. Greene Jr. Award for Tanks in Hell: A Marine Corps Tank Company on Tarawa (2015). Ed passed away in February 2019.