That's all very well, but these days 'enemy lines' are a little bit blurred. Classic definitions of FLOT etc don't really do justice to how we find the ground truth in Iraq and Afghanistan.
So in these conditions it's very simple - wear CS95/grow-bag, negative badges of any description - not even rank. You should know and be known by your team, and no-one else needs to know.
If you've got wings/Boy Scouts' hoof-picking qualification, so what, both are knack-all use in a fire-fight, in my humble and all-too-real experience.