Vietnam War Medal of Honor Recipient. He received the award posthumously (presented to his widow) by Secretary of the Army Stanley Rogers Resor at the Pentagon on October 19, 1967, for his actions as a 1st lieutenant with the Headquarters and Headquarters Company, 1st Battalion (Airborne), 327th Infantry, 1st Brigade, 101st Airborne Division, US Army, on February 7, 1966, at My Canh, South Vietnam. He joined the US Army in 1964 and following a tour at Fort Campbell, Kentucky, he was sent to South Vietnam in 1965. He helped to form and train Tiger Force, a task force of the division's 1st Battalion (Airborne), 27th Infantry Regiment, 1st Brigade, which specialized in the use of guerrilla tactics. On February 7, 1966, during Operation Van Buren, he led a platoon in the relief of a company that was pinned down by a strongly entrenched and numerically superior enemy forces and was mortally wounded as he blew up a bunker. He was also awarded the Bronze Star, the Purple Heart, and the Vietnam Gallantry Cross (with palm). His Medal of Honor citation reads: "For conspicuous gallantry and intrepidity in action at the risk of his life above and beyond the call of duty. 1st Lt. Gardner's platoon was advancing to relieve a company of the 1st Battalion that had been pinned down for several hours by a numerically superior enemy force in the village of My Canh, Vietnam. The enemy occupied a series of strongly fortified bunker positions which were mutually supporting and expertly concealed. Approaches to the position were well covered by an integrated pattern of fire including automatic weapons, machine guns, and mortars. Air strikes and artillery placed on the fortifications had little effect. 1st Lt. Gardner's platoon was to relieve the friendly company by encircling and destroying the enemy force. Even as it moved to begin the attack, the platoon was under heavy enemy fire. During the attack, the enemy fire intensified. Leading the assault and disregarding his own safety, 1st Lt. Gardner charged through a withering hail of fire across an open rice paddy. On reaching the first bunker he destroyed it with a grenade and without hesitation dashed to the second bunker and eliminated it by tossing a grenade inside. Then, crawling swiftly along the dike of a rice paddy, he reached the third bunker. Before he could arm a grenade, the enemy gunner leaped forth, firing at him. 1st Lt. Gardner instantly returned the fire and killed the enemy gunner at a distance of 6 feet. Following the seizure of the main enemy position, he reorganized the platoon to continue the attack. Advancing to the new assault position, the platoon was pinned down by an enemy machine gun emplaced in a fortified bunker. 1st Lt. Gardner immediately collected several grenades and charged the enemy position, firing his rifle as he advanced to neutralize the defenders. He dropped a grenade into the bunker and vaulted beyond. As the bunker blew up, he came under fire again. Rolling into a ditch to gain cover, he moved toward the new source of fire. Nearing the position, he leaped from the ditch and advanced with a grenade in one hand and firing his rifle with the other. He was gravely wounded just before he reached the bunker, but with a last valiant effort he staggered forward and destroyed the bunker, and its defenders with a grenade. Although he fell dead on the rim of the bunker, his extraordinary actions so inspired the men of his platoon that they resumed the attack and completely routed the enemy. 1st Lt. Gardner's conspicuous gallantry were in the highest traditions of the U.S. Army."