While our female soldiers are merely "encouraged" to wear this headpiece when appropriate, I can see the writing on the wall. Having served 12 years in the U.S. Army, I can assure you that when were "encouraged" to do something, it meant, "do it."
Cultural and mysoginistic issues aside, if I was walking around Afghanistan, where bullets or IEDs could erupt at any second, I would much rather be wearing my kevlar brain bucket than a thin piece of cloth. On so many levels, this is a case of sacrificing our female soldiers on the altar of political correctness, including having many of them there in the first place. We still have a rule against putting our women into combat, however, the military has found ways around that rule by not putting our female soldiers into combat units like infantry and artillery, but putting them into designated non-combat units that are then sent into combat situations.
Disagree with me about female roles in our military if you like, but I can't see how you can defend forcing our female soldiers into the Islamic hijab.
"If a nation expects to be ignorant and free... it expects what never was, and never will be." -Thomas Jefferson