Thanks for the info

I'm trying to come up with rule for implementing a combat career into combat 

What do you think of the following, too powerful?

Combat Career
If you have a career that is linked to combat (Gladiator, Mercenary for example), you can add extra points to an attack roll or a damage roll, up to your career rank, once per fight.
 
So if you had Mercenary +3, you could add +1, +2, or +3 to any attack or damage roll you make. You can also (for example) add +2 to an attack roll, and then +1 to any resultant damage roll.

What is BoL Everwhen? It sounds like it's a generic universal label for the system