User:Spartan G-23/Sub-Commander

Sub-Commander, abbreviated SCDM, is an officer rank in the Precursor Navy and the highest rank in it that does not command a ship. Its analog in the Precursor Infantry Corps and Precursor Armoured Corps is the rank Staff-Officer. A Sub-Commander acts as the second-in-command of a battleship, and in the case of the commander or a higher rank being killed, they will take their place as commander of the vessel. However, if they are on a Fleet Marshal's ship and the Fleet Marshal is killed, they do not take over the fleet.

The Sub-Commander is also a rank that takes an incredibly large amount of skill and knowledge for them to get promoted.