Vietnam ground combat operations in 1965, and at their peak they numbered more than 500,000. The US also engaged in a sustained aerial bombing campaign. Meanwhile, China and the Soviet Union provided North Vietnam with significant material aid and 15,000 combat advisers. Communist forces supplying the Việt Cộng carried supplies along the Hồ Chí Minh trail, which passed through the Kingdom of Laos. The communists attacked South Vietnamese targets during the 1968 Tết Offensive. Although the campaign failed militarily, it shocked the American establishment, and turned US public opinion against the war. During the offensive, communist troops massacred over 3,000 civilians
Opposition to United States involvement in the Vietnam War the Vietnam War was partly attributed to greater access to uncensored information through extensive television coverage on the ground in Vietnam. Beyond opposition to the draft, anti-war protesters also made moral arguments against U.S. involvement in Vietnam. That moral imperative argument against the war was especially popular among American college students, who were more likely than the general public to accuse the United States of having imperialistic goals in Vietnam and to criticize the war as "immoral." Civilian deaths, which were downplayed or omitted entirely by the Western media, became a subject of protest when photographic evidence of casualties emerged.