In 2364, Lieutenant Chang was serving as an Academy TAC officer at the Federation starbase on planet Relva VII. While there, he oversaw Wesley Crusher as he took the Starfleet Academy entrance exam. (TNG: "Coming of Age")
|Enlisted personnel||Commissioned officers||Generals and flag officers|
|ENS||LT JG||LT||LT CMDR||CMDR||CAPT||FCAPT||CDORE||RADM||VADM||ADM||FADM|
|2nd LT||1st LT||CAPT||MAJ||LT COL||COL||BRIG||MAJ GEN||LT GEN||GEN||MARSHAL|
|Positions:||Crewman • Technician • Chief||YMN||TAC • SO • 3rd • 2nd • 1st • CO • DD||Portmaster • Chief of Staff • CinC|
|Services:|| Andorian • Bajoran • Cardassian • Jem'Hadar • Klingon • Romulan • SS • Terran Empire Starfleet • Terran Empire MACO •|
United Earth MACO • United Earth/Federation Starfleet • United States • Vulcan
"TAC officer " is a real-life title used by a number of military training facilities, including the United States Military Academy (USMA) and the Warrant Officer Candidate School (WOCS). TAC stands for Training, Advising and Counseling, and TAC officers oversee the instruction, development and evaluation of cadets or candidates undergoing military training.