Marvin Leon Summerall was born on May 4, 1922 in Glades County, Florida. He was the son of Berrien Brown Summerall and Wildie Rofeno Keen Summerall. He had been a farm hand (animal and livestock). He enlisted into the U.S. Army on Nov. 11, 1942. His marital status was "Single with dependents". Marvin served in the U.S. Army during World War II as a Technician Fifth Grade in the 462nd Amphibious Truck Company. He was killed during the Exercise Tiger--one of the large-scale rehearsals for the D-Day invasion of Normandy. This took place in April 1944 in Slapton Sands, Devon in the UK. An Allied naval convoy involved in the exercise was attacked by German submarines, and coordination and communication problems resulted in friendly fire deaths. At least 749 American servicemen were killed. Because of the impending invasion of Normandy, the incident was highly classified and the full story did not come out until years later after the war. He was declared "Missing in Action" on April 28, 1944 and is commemorated on Tablets of the Missing, Cambridge American Cemetery, Cambridge, United Kingdom. He also has a cenotaph located in Fort Denaud Cemetery, Denaud, Hendry County, Florida, USA.