 To support South Vietnam from communist North Vietnam, Korea State Council agreed to send a Division and its supporting units on July 2, and National Assembly of South Korea made final decision to send troops on August 13.On August 17, the Republic of Korea Marine Corps attached various battalions, companies, and platoons to the 2nd Marine Regiment to increase its size to a brigade.The Marine Corps originally planned battalion to regiment size unit, but reports from Vietnam said that separating army and Marines was more appropriate to operate.