Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Admiral	Finish the main historical campaign.
Blind Kamikaze	Send out an Airstrike mission that doesn't sink any enemy fleets and have no squadrons return.
Captain	Order a single officer with six medals.
Commander	Finish the first chapter of the campaign.
Eddie Smith	Have your carrier sink 10 times.
Ensign	Set sail for the first time.
Fleet Admiral	Complete the historical campaign together with all optional objectives and gain all four medals in every mission.
Lieutenant Commander	Complete all three tutorial missions.
Lieutenant Junior Grade	Survive your first enemy attack.
Lieutenant	Sink the first enemy fleet.
Octavius	Travel a total of 10,000 miles.
Purple Heart	Have 50 crew units die.
Rear Admiral	Unlock CV-9 Essex Class aircraft carrier.
The Bronze Star	Spend 50 points on upgrades.
The Medal of Honor	Sink 100 ships.
Vice Admiral	Finish the third chapter of the campaign.
Warrant Officer	Finish the second chapter of the campaign.
We Pirates Now	Sink a ship after the war ends on September 2nd 1945.