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Aerial Herbicide Spray Missions in Southern Vietnam 1965 - 1971

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Aerial Herbicide Spray Missions in Southern Vietnam 1965 - 1971

The military use of herbicides in Vietnam began in 1961, was expanded during 1965 and 1966, and reached a peak from 1967 to 1969.

The code name for the overall herbicide program was TRAIL DUST. The code name RANCH HAND specifically referred to the C-123 herbicide-spraying project.

This map is a representation of herbicide spray missions in Vietnam. The dark areas represent concentrated spraying areas. This map only represents fixed-wing aircraft spraying, and does not include helicopter spraying of perimeters, or other spray methods.

The III Corps area received the heaviest concentrations of spraying, followed by I Corps, II Corps and IV Corps.