|Master sergeant insignia|
|Miri's homeworld, 2266|
Master sergeant was a military rank, a traditional infantry or army enlisted grade held by a non-commissioned officer. In comparison to naval ranking systems, this rank was approximately equivalent to the naval chief petty officer or senior chief petty officer grades.
|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
The insignia seen on Jahn's jacket was styled like a US Army master sergeant - three chevrons above and three rockers below, with no center insignia, however the patch seemed to have been sewn in US Marine colors (the Marine master sergeant patch would have crossed rifles in the center field). This style of US Marine insignia is of the pre-1959, prior to the rank restructuring of the US military, thus not showing the crossed rifles.