Nonetheless, planning for command and control arrangements of Free World forces continued into May 1965. From June to October 1964 Free World activities had been handled by a small staff section within the Military Assistance Command, Vietnam–J-5, the Plans and Policy Directorate. As the scope of the Free World contributions, military and technical, grew, the need for a separate staff section just for Free World affairs became apparent. As a first step General Westmoreland in December 1964 had established the International Military Assistance Office under the staff supervision of the USMACV assistant chief of staff, J-5. In May 1965 after the decision to seek Free World combat forces had been taken, further plans were made to effect smooth-functioning command relationships. Generals Westmoreland and Minh, in discussing the subject of a combined staff, brought up earlier in April, envisaged this time a staff which would prepare studies, analysis, and guidance for U.S. and Vietnam field commands through the respective chains of command–a combined staff, not a combined headquarters. General Westmoreland felt it premature to propose creation of a combined co-ordinating staff. At the same time he appointed Brigadier General James L. Collins, Jr., as his special representative to the Vietnam Joint General Staff on all matters pertaining to the co-ordination of U.S., Vietnam, and other Free World forces operations. This was about as far as General Westmoreland was willing to go at the time on the matter of command arrangements.
Free World Troops in Vietnam, 1965-1966
In May 1965 Free World commitments began to be honored as other governments agreed officially to send troops and prepared to deploy them. The first to help with this expansion was the government of Australia. Australia agreed in May to send a task force to South Vietnam composed of Headquarters, Royal Australian Regiment, plus the 79th Signal Troop and a logistical support company. Arriving in South Vietnam during the early part of June, this contingent, attached to the U.S. 173d Airborne Brigade, operated from Bien Hoa. A military working arrangement had already been signed between the Commander, Australian Armed Forces, Vietnam, and General Westmoreland that provided for operational control of the Australian troops by the Commander, U.S. Military Assistance Command, Vietnam, and also for complete U.S. administrative and logistical support. In September a financial working arrangement was concluded that provided for the Australian government to repay the United
