The Vietnam War took place.
The Gulf of Tonkin incident ( Sự kiện Vịnh Bắc Bộ ) , also known as the USS Maddox incident , drew the United States more directly into the Vietnam War . Vietnam War . U.S. involvement escalated further following the 1964 Gulf of Tonkin incident , in which a U.S. destroyer clashed with North Vietnamese fast attack craft , which was followed by the Gulf of Tonkin Resolution , which gave the U.S. president authorization to increase U.S. military presence .