The President of the United States of America, authorized by Act of Congress July 9, 1918, takes pride in presenting the Silver Star (Posthumously) to Sergeant Pablo Sierra (ASN: US-51062889), United States Army, for gallantry in action as a member of Company I, 3d Battalion, 65th Infantry, 3d Infantry Division, in action against an armed enemy in Korea. On 30 September 1951, Company I, 3d Battalion, engaged in an attack on a well-fortified hill near Chorwon, Korea, was subjected to intense fire from the entrenched enemy. Realizing that the hill could only be taken with bayonet and grenade as friendly mortar and artillery fire had failed to dislodge the hostile troops, Sergeant Sierra led his squad in an assault on the first pillbox. Although several of his men were felled by the hail of fire, he continued to fearlessly advance and destroy the occupants of the emplacements with hand grenades. Inspired by his example, the attack gained momentum and the hostile defense was broken. Fearlessly exposing himself, Sergeant Sierra mounted a machine gun on the crest of the hill and delivered a lethal fire into the retreating foe; however, while so engaged, he was mortally wounded by enemy small arms fire. The singular gallantry and courage displayed by Sergeant Sierra reflects great credit upon himself and the military service.