United States Army uniforms in World War II

The United States Army in World War II used a variety of standard and non-standard dress and battle uniforms, which often changed depending upon the theater of war, climatic environment, and supply exigencies. == Men's service uniforms == U.S. Army basic service uniforms consisted of a winter service uniform of olive drab wool worn in temperate weather, and a summer service uniform of khaki cotton fabric worn in tropical weather.

Source: Wikipedia — United States Army uniforms in World War II (CC BY-SA 4.0)