He was posthumously promoted to corporal, and in 1952, recommended for the Medal of Honor. Believing that Gilliland may have been captured by the Chinese, the Army delayed the announcement of the award for fear that he would be punished if his captors learned of his deeds. In 1954, after hostilities had ceased and no sign of Gilliland was found, he was declared dead. The Medal of Honor was formally presented to his family in December of that year during a ceremony at the Pentagon. One month shy of his 18th birthday when he earned the award, Gilliland was the youngest Medal of Honor recipient of the Korean War.