The President of the United States of America takes pride in presenting the Navy Cross (Posthumously) to Private First Class Mario Joseph Cardillo (MCSN: 1214718), United States Marine Corps, for extraordinary heroism in connection with military operations against an armed enemy of the United Nations while serving as a Mortar Ammunition Carrier in Company A, First Battalion, Fifth Marines, FIRST Marine Division (Reinforced), in action against enemy aggressor forces in the Republic of Korea on 9 May 1952. Quick to answer a call for volunteers to go to the aid of a rifle platoon which was subjected to a heavy barrage of enemy artillery, mortar and small-arms fire from a numerically superior hostile force located in nearby, well-entrenched positions, Private First Class Cardillo, although suffering from painful wounds incurred the same day, unhesitatingly assumed a position on an exposed flank out of immediate contact with the platoon. Despite fierce enemy fire, he staunchly maintained his position and engaged the overwhelming force at close range, thereby preventing an encirclement of the platoon and enabling the unit to evacuate the wounded and to withdraw its forward elements. Struck by hostile fire and mortally wounded when the enemy overran his sector, Private First Class Cardillo had served to inspire all who observed him. His great personal valor, exceptional initiative and selfless devotion to duty were in keeping with the highest traditions of the United States Naval Service. He gallantly gave his life for his country.