Level 1 (Private)
Level 2(Private II) Unlocks the LMG Class
Level 3 (Private III) Unlocks the Sniper Class
Level 4 (Private First Class) Unlocks Create A Class.
Level 5 (Private First Class II) Unlocks the RPK and Contracts.
Level 6 (Private First Class III) Unlocks the Enfield and Clan Tags.
Level 7 (Specialist) Unlocks Skorpion.
Level 8 (Specialist II) Unlocks the Stakeout and game mode challenges.
Level 9 (Specialist III) Unlocks the M14.
Level 10 (Corporal) Unlocks Killstreaks, playercard data, and emblem editing.
Level 11 (Corporal II) Unlocks the Mac11
Level 12 (Corporal III) Unlocks the RPG.
Level 13 (Sergeant) Unlocks the Combat Record.
Level 14 (Sergeant II) Unlocks the FAMAS.
Level 15 (Sergeant III) Unlocks the Ballistic Knife and medal challenges.
Level 16 (Staff Sergeant) Unlocks weapon emblems.
Level 17 (Staff Sergeant II) Unlocks the AK74u.
Level 18 (Staff Sergeant III) Unlocks the Python.
Level 19 (Sergeant First Class) Unlocks weapon clan tags.
Level 20 (Sergeant First Class II) Unlocks the Galil and elite challenges.
Level 21 (Sergeant First Class III) Unlocks nothing.
Level 22 (Sergeant Major) Unlocks weapon cameos.
Level 23 (Sergeant Major II) Unlocks the Uzi.
Level 24 (Sergeant Major III) Unlocks the Spas-12
Level 25 (Lieutenant) Unlocks custom sights
Level 26 (Lieutenant II) Unlocks the AUG.
Level 27 (Lieutenant III) Unlocks the L96A1.
Level 28 (Captain) Unlocks custom lenses.
Level 29 (Captain II) Unlocks The PM63
Level 30 (Captain III. Unlocks the final challenges.
Level 31 (Major) Unlocks face paints.
Level 32 (Major II) Unlocks the FN FAL.
Level 33 (Major III) Unlocks the crossbow.
Level 34 (Lieutenant Colonel) Unlocks nothing.
Level 35 (Lieutenant Colonel II) Unlocks the MPL.
Level 36 (Lieutenant Colonel III) Unlocks nothing.
Level 37 (Colonel) Unlocks nothing.
Level 38 (Colonel II) Unlocks the AK-47
Level 39 (Colonel III) Unlocks nothing.
Level 40 (Brigadier General) Unlocks nothing.
Level 41 (Brigadier General II) Unlocks the spectre.
Level 42 (Brigadier General III) Unlocks nothing..
Level 43 (Major General) Unlocks nothing.
Level 44 (Major General II) Unlocks the Commando.
Level 45 (Major General III) Unlocks nothing.
Level 46 (Lieutenant General) Unlocks nothing.
Level 47 (Lieutenant General II) Unlocks nothing.
Level 48 (Lieutenant General III) Unlocks the China Lake
Level 49 (General) Unlocks nothing
Level 50 (Commander) Unlocks Prestige Mode