Here is a full listing of the current ranks in Battlefield 2142 as well as the global score amount needed to receive them.
Recruit
Global Points Required: 0
Private
Global Points Required: 40
Private 1st Class
Global Points Required: 68
Gunner Silver
Global Points Required: 116
Gunner Gold
Global Points Required: 197
Corporal Silver
Global Points Required: 334
Corporal Gold
Global Points Required: 501
Lance Corporal Silver
Global Points Required: 701
Lance Corporal Gold
GGlobal Points Required: 941
Master Corporal Silver
Global Points Required: 1230
Master Corporal Gold
Global Points Required: 1575
Sergeant Silver
Global Points Required: 1991
Sergeant Gold
Global Points Required: 2489
Master Sergeant Silver
Global Points Required: 3086
Master Sergeant Gold
Global Points Required: 3804
Sergeant Major Silver
Global Points Required: 4664
Sergeant Major Gold
Global Points Required: 5697
Sergeant Major of the Army
Global Points Required: 6937
Chief Petty Officer Silver
Global Points Required: 8404
Chief Petty Officer Gold
Global Points Required: 10165
Warrant Officer Silver
Global Points Required: 12278
Warrant Officer Gold
Global Points Required: 14814
1st Lieutenant Silver
Global Points Required: 17856
1st Lieutenant Gold
Global Points Required: 21507
2nd Lieutenant Silver
Global Points Required: 25734
2nd Lieutenant Gold
Global Points Required: 30594
Captain Silver
Global Points Required: 36183
Captain Gold
Global Points Required: 42610
Major Silver
Global Points Required: 50002
Major Gold
Global Points Required: 58502
Lieutenant Colonel Silver
Global Points Required: 68277
Lieutenant Colonel Gold
Global Points Required: 79159
Colonel Silver
Global Points Required: 92447
Colonel Gold
Global Points Required: 107314
Commissar Silver
Global Points Required: 123411
Commissar Gold
Global Points Required: 141922
Field Commissar Silver
Global Points Required: 163210
Field Commissar Gold
Global Points Required: 187692
Field Marshall Silver
Global Points Required: 202692
Field Marshall Gold
Global Points Required: 217692
Brigadier General
Global Points Required: 232692
Major General
Global Points Required: 0
Lieutenant General
Global Points Required: 0
Supreme Commander
Global Points Required: 40