, in more archaic context transliterated as (, abbreviated as ), anglicized as Tagmatarch, is used in the Greek language to mean "Major". More precisely, it means "commander of a " ().
The rank dates to Antiquity and was also used in the Byzantine Empire. In the modern Hellenic Army, the rank is superior to a (, captain) and inferior to an (, Lieutenant Colonel), and held either usually by battalion () executive officers (battalions are typically commanded by Lieutenant Colonels). In this case they are addressed as "" (), or simply as "" () in other cases.