Rank and organization:   sergeant, U.S. Marine Corps Reserve.
May 1914, Atlanta, Ga.
Accredited to:   Georgia.
Citation:   For conspicuous
heroism and intrepidity above and beyond the call of duty during the Marine
Raider Expedition against the Japanese-held island of Makin on 17-18 August
1942. Leading the advance element of the assault echelon, Sgt. Thomason
disposed his men with keen judgment and discrimination and, by his exemplary
leadership and great personal valor, exhorted them to like fearless efforts.
On 1 occasion, he dauntlessly walked up to a house which concealed an enemy
Japanese sniper, forced in the door and shot the man before he could resist.
Later in the action, while leading an assault on an enemy position, he
gallantly gave his life in the service of his country. His courage and
loyal devotion to duty in the face of grave peril were in keeping with
the finest traditions of the U.S. Naval Service.
This data was extracted from the Committee on Veterans' Affairs, U.S. Senate, Medal of Honor Recipients: 1863-1973 (Washington, D.C.: Government Printing Office, 1973)