because of their membership in the International Control Commission. The Republic of the Philippines and the Republic of Korea found their proposals meeting opposition from within their respective national legislative bodies. Some of this opposition was due to political instability in South Vietnam from March through June 1966. Countries were reluctant to send aid when the future of South Vietnam seemed uncertain and perilous.
While political bickering over the Vietnam issue occupied some elements of the Korean government, less publicized efforts were well under way to increase the number of Korean units in South Vietnam. On 8 January 1966 the U.S. Ambassador in Seoul was instructed by the Secretary of State to begin prompt negotiations to obtain a Korean regiment for deployment to South Vietnam by April, and a Korean division for deployment by July. These units were to be accompanied by the necessary combat support and combat service support elements.
During the course of the negotiations, three major points developed by the Korean government and agreed to by the United States were that Korean defense capability would not be jeopardized, that the expenses of deploying additional forces to South Vietnam would not constitute an excessive economic burden to the Korean people, and that the Republic of Korea would receive preferential treatment to maximize its economic benefits.
President Chung Hee Park of Korea on 29 January approved, subject to ratification by the Korean National Assembly, the South Vietnamese request for an additional Korean regiment and division. In response to this announcement the United States agreed to finance all additional costs and equip as necessary the extra forces deployed to South Vietnam; assume the costs of overseas allowances at the agreed upon scale; provide death and disability gratuities resulting from casualties; and equip, train, and finance the replacements for the forces deployed to South Vietnam. After several weeks of debate and behind-the-scenes political maneuvering, the Korean National Assembly passed the bill authorizing the dispatch of additional troops to South Vietnam.
On 17 February 1966, the Royal Thai Military Assistance Group, Vietnam, was activated, with the Thai Air Force contingent becoming a subordinate element of that group. In March a military working arrangement was signed between the U.S. Military Assistance Command, Vietnam, and the Royal Thai Military Assistance Group, Vietnam.
By March the Joint General Staff had developed a tentative Korean force structure and presented it to the Chief, Korean
