At Taco Bell today I saw a woman in green army fatigues. On her sleeve’s shoulder was a blue insiginia(?). Blue on the green and black was quite hard to see. It had a star in the middle and lines around it. Kinda looked like an Army Sgt. Maj.'s insignia buy not exactly. As I said, it was blue and on the camo outfit.
Any ideas? Is this a rank? A branch? Something else?