Oh. Wow, I didn't even know we had that...
Anyway, now that I think of it, you're probably right. Sorry about that...
Also, he's going into just the regular marines. The training would be about the same as modern regular forces. While the older ID-SOLs, and certainly those created for the IPG or actual spec ops characters do still have the hardcore training, there are plenty who don't. You're not enough of a vet for a spec ops guy, sorry :/
As for the name, like Rhodes and Power, they do have last names. They just kind of randomly assign ones, or let them pick, depending on who's running the center or whatever.