They do not know their branch/specialty yet. They will choose later in the year, so unlike NROTC there is no "Marine Option." They have a pre-req program, but none will be Marines until the senior class chooses their paths later this year.
Check out these guys. Written by a couple USMA grads, I think. Lots of good insight into the new Army team's development.
I despise Navy to the core of my being. As a USMA grad, I have no choice. I relish in loathing the sea-faring squidbillies. Go Bucks. Also, Navy has multiple three-star recruits.