Each Rank has a set amount of XP which must be earned to level up. After leveling up, you will unlock that rank's Dog Tag. You may unlock a Specialization or Weapon too. You start out on rank 0, called "Ensign", with basic weapons in each kit. The following list has the level, the rank name, the XP needed to rank up, and the total amount of XP needed.
After Rank 45 (Colonel) you will earn Service Stars to your Colonel Rank each time you rank up. You can earn a max of 100 Service Stars, making the total ranks 145.
Private First Class: 1,000 (1,000) XP – 870 MCS
Private First Class 1 Star: 7,000 (8,000) XP – SPRNT
Private First Class 2 Stars: 10,000 (18,000) XP - Woodland Pattern Camouflage
Private First Class 3 Stars: 11,000 (29,000) XP - G17C
Lance Corporal: 12,000 (41,000) XP – AMMO
Lance Corporal 1 Star: 13,000 (54,000) XP - Ranger Camouflage
Lance Corporal 2 Stars: 13,000 (67,000) XP – PP-2000
Lance Corporal 3 Stars: 14,000 (81,000) XP – FLAK
Corporal: 15,000 (96,000) XP - Army Green Camouflage
Corporal 1 Star: 15,000 (111,000) XP – M9 TACT.
Corporal 2 Stars: 19,000 (130,000) XP – EXPL
Corporal 3 Stars: 20,000 (150,000) XP - Expeditionary Force Camouflage
Sergeant: 20,000 (170,000) XP - MP443 TACT.
Sergeant 1 Star: 20,000 (190,000) XP - COVR
Sergeant 2 Stars: 30,000 (220,000) XP - Paratrooper Camouflage
Sergeant 3 Stars: 30,000 (250,000) XP – UMP-45
Staff Sergeant: 30,000 (280,000) XP - SUPR
Staff Sergeant 1 Star: 30,000 (310,000) XP - Navy Blue Camouflage
Staff Sergeant 2 Stars: 30,000 (340,000) XP - G17C SUPP.
Gunnery Sergeant: 30,000 (370,000) XP - FRAG
Gunnery Sergeant 1 Star: 30,000 (400,000) XP - Jungle Pattern Camouflage
Gunnery Sergeant 2 Star: 30,000 (430,000) XP - M1014
Master Sergeant: 40,000 (470,000) XP - SQD SPRNT
Master Sergeant 1 Star: 40,000 (510,000) XP - Desert Khaki Camouflage
Master Sergeant 2 Stars: 40,000 (550,000) XP - M9 SUPP.
First Sergeant: 40,000 (590,000) XP - SQD AMMO
First Sergeant 1 Star: 40,000 (630,000) XP - Urban Pattern Camouflage
First Sergeant 2 Stars: 40,000 (670,000) XP - MP443 SUPP.
Master Gunnery Sergeant: 40,000 (710,000) XP - SQD FLAK
Master Gunnery Sergeant 1 Star: 50,000 (760,000) XP - G18
Master Gunnery Sergeant 2 Stars: 50,000 (810,000) XP - SQD EXPL
Sergeant Major: 50,000 (860,000) XP - PDW-R
Sergeant Major 1 Star: 50,000 (910,000) XP - SQD SUPR
Sergeant Major 2 Star: 50,000 (960,000) XP - SAIGA 12K
Warrant Officer One: 50,000 (1,010,000) XP - SQD COVR
Chief Warrant Officer Two: 50,000 (1,060,000) XP - .44 Magnum
Chief Warrant Officer Three: 50,000 (1,110,000) XP - SQD FRAG
Chief Warrant Officer Four: 55,000 (1,165,000) XP - DAO-12
Chief Warrant Officer Five: 55,000 (1,220,000) XP - Veteran Package Camouflage
Second Lieutenant: 60,000 (1,280,000) XP - P90
First Lieutenant: 60,000 (1,340,000) XP - G18 SUPP.
Captain: 60,000 (1,400,000) XP - Spec Ops Black Camouflage
Major: 60,000 (1,460,000)XP - USAS-12
Lt. Colonel: 60,000 (1,520,000) XP - .44 SCOPED
Colonel: 80,000 (1,600,000) XP - AS VAL
About Camouflage
Camouflage is the colored outfit your multiplayer character wears. You can change your apperance at the customize screen in multiplayer. There are twelve different camos. Each one is unlocked at a certain Rank.
Default Camo
Woodland Pattern
Ranger Camo
Army Green
Expeditinary Force
Paratrooper
Navy Blue
Jungle Pattern
Desert Khaki
Urban Pattern
Vetern Kit
Spec Ops Black