Okay, here is the ranking system first, then the class System.
Ranking System.
REC (Recruit)
SP5 (05)
SP4 (04)
SP3 (03)
SP2 (02)
SP1 (01)
DnG (EpU)
VmV (DvL)
XnO (SeC)
RIO (Second In Command)
LEG (Command)
Here are the classes, if it is VmV+ Only VmV and higher ranks can only use the class.
Ranger: (REC+) (Weapons: SMG, Pistol)
Bear: (SP2+) (Weapons: Shotgun, Pistol)
Medic: (REC+) (Weapons: Pistol)
Hunter: (VmV+) (Weapons: CrossBow, Magnum)
Heavy: (XnO+) (Weapons: RPG, Pistol )
Snake: (RIO Only) (Weapons: Magnum, CrossBow, SMG, Pistol)
Danger: (LEG Only) (Weapons: Weapons of choice)
Hope you enjoy this, feel free to post comments about it.