VA Compensation and Pension Bulletin May 2010
DoD has provided information that commercial herbicides, rather than tactical herbicides, were used within the confines of Thailand bases to control weeds. These commercial herbicides have been, and continue to be, used on all military bases worldwide. They do not fall under the VA regulations governing exposure to tactical herbicides such as Agent Orange. However, there is some evidence that the herbicides used on the Thailand base perimeters may have been either tactical, procured from Vietnam, or a commercial variant of much greater strength and with characteristics of tactical herbicides. Therefore, C&P Service has determined that a special consideration of herbicide exposure on a facts found or direct basis should be extended to those Veterans whose duties placed them on or near the perimeters of Thailand military bases. This allows for presumptive service connection of the diseases associated with herbicide exposure.
The majority of troops in Thailand during the Vietnam era were stationed at the Royal Thai Air Force Bases of U-Tapao, Ubon, Nakhon Phanom, Udorn, Takhli, Korat, and Don Muang