In 1965 the large, loud, and highly visible tanks of 3rd Platoon, B Company, 3rd Tank Battalion landed across a beach near Da Nang, drawing unwelcome attention to America’s first, almost covert, commitment of ground troops in South Vietnam. As the Marine Corps presence grew inexorably, the 1st and 3rd Tank Battalions, as well as elements of the reactivated 5th Tank Battalion, were committed to the conflict. For the United States Marine Corps, the protracted and bloody struggle was marked by controversy, but for Marine Corps tankers, it was marked by bitter frustration as they saw their own high levels of command turn their backs on some of the hardest-won lessons of tank-infantry cooperation learned in the Pacific War and in Korea. Nevertheless, like good Marines, the officers and enlisted men of the tank battalions sought out the enemy in the sand dunes, jungles, mountains, paddy fields, tiny villages, and ancient cities of Vietnam. Young Marine tankers fresh out of training, and cynical veterans of the Pacific War and Korea, battled two enemies. The battle-hardened Viet Cong were masters of the art of striking hard, then slipping away to fight another day. The highly motivated troops of the North Vietnamese Army, equipped with long-range artillery and able to flee across nearby borders into sanctuaries where the Marines were forbidden to follow, engaged the Marines in brutal conventional combat.