Combat rating is a crude measure of your fighting skills in EV: Nova. It is based the sum of the strengths of the ships you destroy (multiplied by an internal multiplier for adjustment), with larger ships worth more points. Some mission strings require a certain minimum combat rating. The "Kills" value for any pilot can be found in the pilotlog. Once a combat rating of Deadly is reached, a player's demands for tribute from planets, if made, will be taken seriously, and the planet's defense fleet will be launched. The combat ratings are as follows:

Kills Corresponding Rating
0 No Ability
1 Little Ability
100 Fair Ability
200 Average Ability
400 Good Ability
800 Competent
1600 Very Competent
3200 Worthy of Note
6400 Dangerous
12800 Deadly
25600 Frightening