Tagmatarchis, in more archaic context transliterated as Tagmatarches (Greek: Ταγματάρχης, abbreviated as Τχης), anglicized as Tagmatarch, is used in the Greek language^[1] to mean "Major".^[2] More precisely, it means "commander of a tagma" (τάγμα).

The rank dates to Antiquity and was also used in the Byzantine Empire. In the modern Hellenic Army, the rank is superior to a Lokhagos (Λοχαγός, captain) and inferior to an Antisyntagmatarchis (Αντισυνταγματάρχης, Lieutenant Colonel), and held either usually by battalion (tagma) executive officers (battalions are typically commanded by Lieutenant Colonels). In this case they are addressed as "Kyrie Ypodioikita" (Κύριε Υποδιοικητά), or simply as "Kyrie Tagmatarcha" (Κύριε Ταγματάρχα) in other cases.

• 
  Rank insignia of a Tagmatarchis, 1908–1936
• 
  Rank insignia of a Tagmatarchis, 1936–1970
• 
  Rank insignia of a Tagmatarchis, 1970–1973
• 
  Current rank insignia of a Tagmatarchis, since 1975

Flag of Greece Greek commissioned officer ranks
NATO code:	OF-1	OF-2	OF-3	OF-4	OF-5	OF-6	OF-7	OF-8	OF-9
Navy:	Simaioforos & Anthypoploiarchos	Ypoploiarchos	Plotarchis	Antiploiarchos	Ploiarchos	Archiploiarchos	Yponavarchos	Antinavarchos	Navarchos
Army:	Anthypolochagos & Ypolochagos Ypilarchos & Anthypilarchos (Armoured)	Lochagos Ilarchos (Armoured)	Tagmatarchis	Antisyntagmatarchis	Syntagmatarchis	Taxiarchos	Ypostratigos	Antistratigos	Stratigos
Air Force:	Anthyposminagos & Yposminagos	Sminagos	Episminagos	Antisminarchos	Sminarchos	Taxiarchos Aeroporias	Ypopterarchos	Antipterarchos	Pterarchos

References