Top photograph: French officers holding maneuvers in Vietnamese rice paddies in 1939; bottom photograph: troops and U.S. supplied helicopters in Vietnam in 1964
Thomas Lindsay, Owensboro, Ky., 28th Malaria Control Detachment, demonstrating to Pvt. John W. Hancock, Humboldt, Tenn., and Pvt. Steve H. Lewis, Oakland, Md., the use of a hand rotary blower to drift a cloud of DDT dust over stagnant water and…