The United States Army entered the conflict in Southeast Asia with the canvas and cotton duck M-1956 Load-Carrying Equipment (LCE). Developed in the early 1950s, the LCE was designed for use with all small arms then in service with the Army. Deficiencies with the LCE were immediately realized once fielded in the tropical climates of Vietnam. Canvas, cotton duck and webbing, even when treated to prevent mildew, is still affected by it, along with dry rot due to constant wetting and drying. Cotton also absorbed a great deal of water, adding to its weight, and was slow drying; it also withstood abrasion poorly.