Your player level. Determines available skill points (4 per level).
Attack damage bonus from your military rank. Check your in-game profile for your current rank percentage.
Extra attack damage from active battle bonuses — orders, alliance/sworn enemy, ethics modifiers, etc.
Active companies. Reduces available skill points.
If pilled, applies damage bonus and presumes hitting a burst with 100% HP and HUN, plus 8 hourly regens during pill effect.