When I was in the Mob it was a Sin not to have your Jacket Zipper done right up to the top....or to step foot on any Grass other than the Parade Field during a Unit Pass in Review or similar activity....and heaven forbid One were to be caught without your Headgear properly set upon your Noggin.
But, it seems the new modern American military has gone completely off its collective Rocker over the Belt, Reflective.
Reflective belt's iconic status - Business Insider