The President of the United States of America takes pride in presenting the Navy Cross (Posthumously) to Private First Class R. A. Jackson (MCSN: 1055580), United States Marine Corps, for extraordinary heroism in connection with military operations against an armed enemy of the United Nations while serving as a Rifleman in Company E, Second Battalion, Fifth Marines, FIRST Marine Division (Reinforced), in action against enemy aggressor forces in the vicinity of Yudam-ni, Korea, on the morning of 28 November 1950. Arming himself with several hand grenades to replace his rifle which failed to operate in the sub-zero temperature, Private First Class Jackson unhesitatingly joined his platoon in a daring attack up an exposed, icy, snow-covered slope to remain adjacent high ground that had been seized and occupied by the enemy during the night. When a hostile machine gun located on the flank pinned down his group with heavy fire, he spotted its position and coolly started to work his way toward the site. Moving in the face of continued intense fire, he succeeded in reaching a position within grenade-throwing distance and, standing upright in full view of the enemy, hurled a grenade with deadly accuracy, destroying the hostile weapon and killing or wounding its entire crew. Mortally wounded by a burst of hostile fire during this action, Private First Class Jackson, by his daring initiative, self-sacrificing efforts in behalf of others and steadfast devotion to duty, upheld the highest traditions of the United States Naval Service. He gallantly gave his life for his country.