The President of the United States of America, authorized by Act of Congress, July 9, 1918 (amended by act of July 25, 1963), takes pleasure in presenting the Distinguished Service Cross to Sergeant First Class Calvin Judson Bowlin, United States Army, for extraordinary heroism in action in connection with military operations involving conflict with an armed hostile force in the Republic of Vietnam on 30 July 1964. As an enlisted advisor to a battalion of the armed forces of the Republic of Vietnam, Sergeant Bowlin demonstrated professional skill, determination, and fortitude while accompanying the friendly units on a military mission. When the Vietnamese battalion was suddenly ambushed by two hostile battalions, killing the Senior American advisor, Sergeant Bowlin immediately assumed full responsibility for the situation. With complete disregard for his own personal safety, he moved through open terrain under heavy enemy fire to reorganize the dispersed Vietnamese units, to establish a perimeter defense, and to rally the troops into a counterattack. Despite the intense gun fire, he then succeeded in retrieving the battalion’s radio from a rice paddy, cleaned it, and put it into operating condition. Again exposing himself to the onslaught of gun fire, he directed air strikes against the hostile forces to within 25 meters of his position. His bravery, perseverance, and courageous actions encouraged the friendly forces to retaliate and prevented the annihilation of the battalion. Sergeant Bowlin’s conspicuous gallantry and extraordinary heroic actions are in the highest traditions of the United States Army and reflect great credit upon himself and the military service.