Halo:Reach Game Rank

Rank		Required no. of Credits*
Recruit		0 cR (+7500 cR)
Private		7500 cR (+2500 cR)
Corporal		10000 cR (+5000 cR)
Corporal Grade 1		15000 cR (+5000 cR)
Sergeant		20000 cR (+6250 cR)
Sergeant Grade 1		26250 cR (+6250 cR)
Sergeant Grade 2		32500 cR (+12500 cR)
Warrant Officer		45000 cR (+33000 cR)
Warrant Officer Grade 1		78000 cR (+33000 cR)
Warrant Officer Grade 2		111000 cR (+33000 cR)
Warrant Officer Grade 3		144000 cR (+66000 cR)
Captain		210000 cR (+23000 cR)
Captain Grade 1		233000 cR (+23000 cR)
Captain Grade 2		256000 cR (+23000 cR)
Captain Grade 3		279000 cR (+46000 cR)
Major		325000 cR (+25000 cR)
Major Grade 1		350000 cR (+25000 cR)
Major Grade 2		375000 cR (+25000 cR)
Major Grade 3		400000 cR (+50000 cR)
Lt. Colonel		450000 cR (+30000 cR)
Lt. Colonel Grade 1		480000 cR (+30000 cR)
Lt. Colonel Grade 2		510000 cR (+30000 cR)
Lt. Colonel Grade 3		540000 cR (+30000 cR)