military personnel who served in Vietnam during this period of herbicide use vary from 2.6 to 3.8 million. Herbicide operations in Vietnam had two primary military objectives: (1) defoliation of trees and plants to improve observation, and (2) destruction of enemy crops.Įstimates of the number of U.S. An additional quantity (1.6 million gallons has been documented) of herbicides was applied to base perimeters, roadways, and communication lines by helicopter and surface sprayings from riverboats, trucks, or backpacks. Air Force sprayed nearly 19 million gallons of herbicides in Vietnam, of which at least 11 million gallons was Agent Orange, in a military project called Operation Ranch Hand.
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