A Defense Uniform is a standardized dress worn by members of the armed forces and paramilitaries of various nations.
Defense uniforms differ not only according to military units but tend to also be offered in different levels of formality in accordance with Western dress codes: full dress uniform for formal wear, mess dress uniform for semi-formal wear, service dress uniform for informal wear, and combat uniform (also called “battle/field dress”) which would equal casual wear. Sometimes added to the casual wear category is physical training uniforms..