Lvl 01 (Private) (Classes Grenadier [Assault], First Recon , Overwatch [Light Machine Gun])
Lvl 02 (Private I) (Scout Sniper Class)
Lvl 03 (Private II) (Riot Squad Class)
Lvl 04 (Private First Class) (Create a Class)
Lvl 05 (Private First Class I)
Lvl 06 (Private First Class II) Painkiller...