Prior to the 20th century, the uniforms of the United States Army were primarily made out of dark blue wool. After the adoption olive drab and khaki uniforms in 1902, the US Army retained dark blue uniforms as its full dress until 1917.
It has been referred to as "Ma Deuce", in reference to its M2 nomenclature. The design has had many specific designations; the official US military designation for the current infantry type is Browning Machine Gun, Cal. .50, M2, HB, Flexible…
