The Galactic Empire: An Empire Reborn
Imperial Officers' Manual
Major Revision: 2.0 – 2008.10.31
An adaptation of the pre–Endor document and policies.
cylinders  RIP  cylinders
... A Commander's Rank Insignia ...

Within the standard Imperial Navy, the rank of Commander (CM) holds two uses.

The first is the introductory rank for first officers onboard "large-scale" capital ships (those with fighter capacities of one full wing (6 squadrons/72 pilots) or more)..

The second is afforded to first officers onboard "smaller-scale" capital ships (those with fighter capacities of less than one full wing (6 squadrons/72 pilots)) who consitently perform exceedingly well after sufficiently long & dedicated service.