The President of the United States of America, authorized by Act of Congress July 9, 1918, takes pleasure in presenting the Silver Star to First Lieutenant (Infantry) John A. Martineau, United States Army, for gallantry in action while serving with the Heavy Mortar Company, 1st Battalion, 7th Infantry Regiment, 3d Infantry Division, in action against the enemy in Korea. On 28 November 1950, at Sachang-Ni, Korea, the 1st Battalion Combat Team was attacked by strong enemy forces while in a perimeter defense position. Lieutenant Martineau, as Platoon Leader in the Heavy Mortar Company, by his cool actions and decisiveness, enabled his Mortar Platoon to remain constantly in action and deliver effective fire on the enemy. AL; though his positions were under intense fire from the enemy, Lieutenant Martineau refused to take cover and directed the fire of his mortars by moving from mortar to mortar without regard for his own personal safety. During the action he was wounded by a piece of shrapnel but refused to leave his mortar position for medical aid. The fire from his platoon assisted the Battalion Combat Team in destroying hundreds of the enemy and in preventing a major breakthrough of the entire perimeter. His gallantry, courage, inspirational leadership, and ability to inspire confidence in his men reflect great credit upon himself and uphold the highest traditions of the Military Service of the United States.