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Last updated on 4/7/24

Site established on 3/22/01

503rd Chemical Detachment

The Sniffers" pocket patch of the 503rd - The 503rd Chemical detachment was allocated to the 199th Infantry Brigade in 1966 and served with the Brigade in the III Corpr Tactical Zone of South Vietnam. The unit operated helicopter borne "people sniffer" apparatus; the sensitivity of the apparatus tuned mainly to detecting the ammonia released in human urine. Information Courtesy of Chris Miller

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