Vietnam War remained in the field for four days. Tellingly, South Vietnamese forces were again defeated in June 1965 at the Battle of Đồng Xoài. On 8 March 1965, 3,500 U.S. Marines were unilaterally dispatched to South Vietnam. This marked the beginning of the American ground war. U.S. public opinion overwhelmingly supported the deployment. The Marines' initial assignment was defensive. The first deployment of 3,500 in March 1965 was increased to nearly 200,000 by December. The U.S. military had long been schooled in offensive warfare. Regardless of political policies, U.S. commanders were institutionally and psychologically unsuited to a defensive mission. General William
China in the Vietnam War the revolution deeper into Southeast Asia via the Indochinese internationalist model. Then relations changes in the late 1960s, as the Cultural Revolution and Maoist visions of permanent revolutionary struggle ran up against important and extremely complex geostrategic differences in Vietnam in the war against the US. Nonetheless, the Chinese continued to supply massive amounts of military and economic aid, as well as sending over 300,000 military support troops into northern Vietnam. Internationalism did suffer a serious blow, plus the Sino-Soviet split, which brought damage to the relations between China, the Soviet Union and of course, Vietnam. Vietnam War: https://en.wikipedia.org/wiki/Vietnam_War First