Hegseth, who recently oversaw the stripping of a base name honoring a Harlem Hellfighter, presented the award to descendants of the Harlem Hellfighters.
After noticing that the practice of documenting war was fading, the veteran aimed to capture insights from battles and make them available to scholars.
Larson was among the nearly 160,000 Allied troops who stormed the Normandy shore on June 6, 1944, surviving machine-gun fire when he landed on Omaha Beach.