The Army, in it's wisdom, does not allow soldiers to purchase the Desert BDU - they are NOT available through the clothing sales system.
Thus, the only way to get these uniforms is through the supply system, which, as you might have guessed, is not as responsive as it's commercial counterpart.
Most units tagged for mideast duty already have the uniforms, but the 4ID doesn't have a specific mideast mission.
This is not about money, it's about responsiveness and preparation.
Whats the big deal? Very few troops actually serve combat roles. Let the REMFs wear woodland camo. Outfit the grunts with desert camo. At least until supply catches up with 'em.
Not a biggie. Like if they miss the tank but see the crew, I'd say they, the Iraqis, are cooked.