The President of the United States of America takes pleasure in presenting the Silver Star to Corporal Leo Marquez (MCSN: 669851), United States Marine Corps, for conspicuous gallantry and intrepidity while serving as a Fire Team Leader of Company C, First Battalion, First Marines, FIRST Marine Division (Reinforced), in action against enemy aggressor forces in Korea on 23 April 1951. When a large hostile force succeeded in penetrating a portion of the defense line during a series of violent night attacks, Corporal Marquez skillfully maneuvered his fire team to repel the enemy, moving among his men shouting words of encouragement and directing effective fire. Frequently engaging the enemy in hand-to-hand combat throughout the night-long attack, he aided materially in limiting the hostile penetration and in assuring the security of the position. By his outstanding courage, gallant fighting spirit and zealous devotion to duty, Corporal Marquez served to inspire all who observed him and upheld the highest traditions of the United States Naval Service.