Alright so that brings it to either a Jedi Knight (Kriffing Jetii), a Vanguard Trooper (on the Old Republic Website. I was busy playing as a Jedi in the MMO.), or a Spartan. 

I would assume this works. Seeing as this is close to when the MMO was. 



I might also say screw it and make a Spartan. I'm much more versed in my Halo Background.