In 1965, the ground war in South Vietnam intensified. In June, the ARVN suffered a disaster at the hands of the Viet Cong in the Battle of Dong Xoai. That same year, U. S. President Lyndon Johnson made the fateful decision to greatly expand American involvement in the war, ordering 150,000 new soldiers and Marines to Vietnam right away and another 150,000 to follow them soon afterward.
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