For gallantry in action while engaged in military operations against an armed hostile force in Cambodia. Staff Sergeant Holbrook distinguished himself while serving with Company C, 3rd Battalion, 8th Infantry, 4th Infantry Division. On 6 May 1970, Company C was inserted into an unsecured landing zone inside the Cambodian border. Sergeant Holbrook continually exposed himself to intense hostile fire as he moved from position to position directing his men in establishing a secure perimeter. When gunships arrived on station, Sergeant Holbrook adjusted their fire to the entrenched enemy force. Assuming command when the company commander was killed, Sergeant Holbrook organized a night defensive perimeter and maintained security throughout the night. Staff Sergeant Holbrook’s personal bravery, outstanding leadership 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.