User blog comment:Vazelos3/Coby as a Captain/@comment-94.68.135.158-20130611123145

In a less imaginary world, Coby would for sure suffered punishment for his action in Marineford War, but in One Piece, these things can easily be overlooked.

In my opinion, Akainu has the authority to cancel promotions and resign marines, but he is not responsible for promotions. Maybe he is responsible for Admiral and Vice Admiral promotions, but a lower ranked Marine could have the responsibility to promote Captains, Commodores etc.

So, I think, a Marine officer aknowledged Coby's possibilities and promoted him without informing Akainu. Even if Akainu got informed, I doubt he bothered with the case, so basically I'm guessing for a mix of:

-Although he can't forgive him, he aknowledged his potential and can't afford to lose such a good soldier.

-He never bothered to look him up, so his promotion went under the radar.

K