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
Vietnam Syndrome brought about because of the Vietnam War and with feelings of doubt over the morality of America's intentions and actions during the war. Reagan, however, argued that America had fought for "a noble cause" and blamed the war in Vietnam exclusively on North Vietnam's aggression: Vietnam Syndrome Vietnam Syndrome, in U.S. politics, is a term used to refer to public aversion to American overseas military involvements, following the domestic controversy over the Vietnam War, which ended in 1975. Since the early 1980s, the combination of a public opinion apparently biased against war, a relative reluctance to deploy ground troops and