I think that in most places, the Army Blue uniform largely is reserved for formal occasions, same as the Army Green uniform came to be. When I was still in the states, I did wear the AG uniform as an everyday office uniform (khakis in the summertime, including with shorts). But overseas, the everyday uniform for all purposes was fatigues. One old sergeant was still wearing his Korean War era HBTs. There was also a separate field uniform and a wool field uniform as well, worn for formal guard mount. I never saw a blue uniform the whole time I was in the army.