The President of the United States of America, authorized by Act of Congress, July 8, 1918 (amended by act of July 25, 1963), takes pride in presenting the Silver Star (Posthumously) to First Lieutenant (Armor) Brian Joseph O’Callaghan, United States Army (Reserve), for conspicuous gallantry and intrepidity in action while engaged in military operations against an armed hostile force in the Republic of Vietnam. First Lieutenant O’Callaghan distinguished himself while serving as a Platoon Leader with Company C, 1st Battalion, 69th Armor, 4th Infantry Division. On 8 January 1970, Company C was conducting an assault of Hill 564 northwest of Landing Zone Scheuller when Lieutenant O’Callaghan’s platoon came under heavy fire from anti-tank rockets, mortars, and small arms. When one of his tanks was immobilized and the safety of its crew jeopardized, Lieutenant O’Callaghan maneuvered his vehicle into a fighting support position to shield and protect the disabled vehicle. As Lieutenant O’Callaghan was effecting emergency recovery procedures, his vehicle received a direct hit, seriously wounding him. Refusing medical attention, Lieutenant O’Callaghan remained with the disabled vehicle until it was moved to safety, and continued to direct operations and engage the enemy until he was mortally wounded. First Lieutenant O’Callaghan’s extraordinary courage, determination and exemplary devotion to duty are in keeping with the highest traditions of the military service and reflect great credit upon himself, his unit and the United States Army.