Online grades


With Westwood Online, Tiberian Dawn featured an online gaming interface and player rankings. Below are the various online ranks:

%	Points	Nod		GDI
TP	500	Supreme Commander	Supreme Commander
0.05	300	Commander		General
1	200	Field Marshal		Brigadier General
5	50	Senior Colonel		Colonel
10	0	Colonel		Lieutenant Colonel
15	0	Major		Major
20	0	Captain		Captain
30	0	Lieutenant		Lieutenant
40	0	Assassin		2nd Lieutenant
50	0	Cyborg		Commando
60	0	Engineer		Engineer
70	0	Sergeant		Sergeant
80	0	Harvester Driver		Harvester Driver
90	0	Grenade Tester		Private
100	0	Tiberium Picker		Boy Talon

COMBINED

was the overall ranking of players in Tiberian Dawn.

GDI

was the ranking of players who predominantly used the GDI.

NOD

was the ranking of players who mainly used NOD.

Points were calculated after each match based on your previous ranking, whether you had won or lost, and whether you were playing against a player ranked higher or lower than you. You started with 0 points and could not go below 0.

The formula for calculating your rank was therefore: RN = RO + K(W - WE)

Where:
RN is your new rank.
RO is your previous rank.
K is a constant (maximum points to be gained or lost (1 to 64) depending on the opponent’s ranking relative to yours).
W is the result (1 = win, 0 = loss).

WE is the expected result derived from the formula: WE = 1 / (10 ^ (DR / 400) + 1)

Where: DR is the ranking difference between the two players.