For other uses, see Dux (disambiguation). Look up dux in Wiktionary, the free dictionary. Ancient Rome This article is part of the series: Politics and government of Ancient Rome Periods Roman Kingdom 753 BC – 509 BC Roman Republic 508 BC – 27 BC Roman Empire 27 BC – AD 1453 Principate Western Empire Dominate Eastern Empire Roman Constitution Constitution of the Kingdom Constitution of the Republic Constitution of the Empire Constitution of the Late Empire History of the Constitution Senate Legislative Assemblies Executive Magistrates Ordinary Magistrates Consul Praetor Quaestor Promagistrate Aedile Tribune Censor Governor Extraordinary Magistrates Dictator Magister Equitum Consular tribune Rex Triumviri Decemviri Titles and Honours Emperor Legatus Dux Officium Praefectus Vicarius Vigintisexviri Lictor Magister militum Imperator Princeps senatus Pontifex Maximus Augustus Caesar Tetrarch Precedent and Law Roman Law

Imperium Mos maiorum Collegiality Roman citizenship Auctoritas Cursus honorum senatus consultum (senatus consultum ultimum) Other countries · Atlas Politics portal view · talk · Dux (plural: duces) is Latin for leader (from the verb ducere, 'to lead') and later for Duke. During the Roman Republic, dux could refer to anyone who commanded troops, including foreign leaders, but was not a formal military rank. In writing his commentaries on the Gallic Wars, Julius Caesar uses the term only for Celtic generals, with one exception for a Roman commander who held no official rank.1 Contents 1 Roman empire 2 Post-Roman uses 2.1 Education 3 Source 4 Notes // Roman empire Until the 3rd century AD, dux was not a formal expression of rank within the Roman military or administrative hierarchy.2 This section does not cite any references or sources. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. (September 2009)

In the Roman military, a Dux would be a general in charge of two or more legions. While the title of dux could refer to a Consul or Imperator, it usually refers to the Roman Governor of the provinces. As the governor, the dux was both the highest civil official as well as the commander-in-chief of the legions garrisoned within the province. However, during the time of the Dominate, the powers as a dux were split from the role of the governor and were given to a new office called "Dux". The dux was still the highest military office within the province and commanded the legions, but the governor had to authorize the use of the dux's powers. But once authorized, the dux could act independently from the governor and handled all military matters. An example would be the Dux per Gallia Belgica which was the Dux of the province of Gallia Belgica. From Diocletian's Tetrarchy reform, the provinces were organized into dioceses each administered by a Vicarius. As with the Governors, the Vicarius was assisted by a Dux. This Dux was superior to all of other Duces within the dioceses and when the Vicarius called the legions of the dioceses into action, all of the legions were at the Dux's command. An example would be the Dux per Gallia which was the Dux of the Dioceses of Gaul. The office of Dux was, in turn, made subject to the Magister Militum of his respective Praetorian prefecture, and above him to the Emperor.

In the Byzantine era of the Roman Empire, the position of "dux" survived (Byzantine Greek: "δούξ", doux, plural "δούκαι", doukai) as a rank equivalent to a general (strategos). In the late 10th and early 11th centuries, a doux or katepano was in charge of large circumscriptions consisting of several smaller themata and of the professional regiments (tagmata) of the Byzantine army (as opposed to the largely militia-like forces of most themata). In the Komnenian period, the title of doux replaced altogether the strategos in designating the military official in charge of a thema. In the Byzantine navy, doukai of the fleet appear in the 1070s, and the office of megas doux ("Grand Duke") was created in the 1090s as the commander-in-chief of the entire navy. Post-Roman uses See also: Duke (Lombard) King Arthur, in one of his earliest literary appearances, is described as dux bellorum ("dux of battles") among the kings of the Romano-Britons in their wars against the Anglo-Saxons.

Dux is also the root of various high feudal noble titles of peerage rank, such as (via the French duc) the English duke, the Spanish and Portuguese duque, the Venetian doge and Italian duca and duce and the modern Greek doukas (δούκας). Italian Fascist dictator Benito Mussolini used the title of Dux (and Duce in Italian) to represent his leadership. Education In schools in Scotland, Australia, New Zealand, South Africa and Iceland, Dux is a modern title given to the top student in academic and sporting achievement (Dux Litterarum and Dux Ludorum respectively) in each graduating year. In this usage, Dux is similar to the American concept of a valedictorian. The runner up may be given the title Proxime Accessit (meaning "he came next") or Semidux, but is often not regarded as highly as his (her) superior. In Portuguese universities the dux is the most senior of students, usually in charge of overseeing the Praxe (initiation rituals for the freshmen). Source Pauly-Wissowa Notes ^ Thomas Wiedemann, “The Fetiales: A Reconsideration,” Classical Quarterly 36 (1986), p. 483. The Roman called dux is Publius Crassus, who was too young to hold a commission; see discussion of his rank. ^ Fergus Millar, The Roman Near East, 31 B.C.-A.D. 337 (Harvard University Press, 1993), p. 191 online. v · d · eAncient Rome topics Timeline Epochs Foundation · Monarchy · Republic · Empire · (Principate and Dominate) · Decline · Western Empire / Eastern Empire Constitution History · Constitution of the Kingdom / the Republic / the Empire / the Late Empire · Senate · Legislative assemblies (Curiate, Century, Tribal, Plebeian)  · Executive magistrates Government Curia · Forum · Cursus honorum · Collegiality · Emperor · Legatus · Dux · Officium · Praefectus · Vicarius · Vigintisexviri · Lictor · Magister militum · Imperator · Princeps senatus · Pontifex Maximus · Augustus · Caesar · Tetrarch · Optimates · Populares · Province Magistrates Ordinary Tribune · Quaestor · Aedile · Praetor · Consul · Censor · Promagistrate · Governor Extraordinary Dictator · Magister Equitum · Decemviri · Consular Tribune · Triumvir · Rex · Interrex Law Twelve Tables · Roman citizenship · Auctoritas · Imperium · Status · Litigation Society Social class · Patricians · Plebs · Conflict of the Orders · Secessio plebis · Equestrian order · Gens · Tribes · Naming conventions · Women · Marriage · Slavery Military Borders · Establishment · Structure · Campaigns · Technology · Political control · Frontiers and fortifications (Castra) · Strategy · Engineering · Army (Legion • Infantry tactics • Personal equipment • Siege engines) · Navy (Fleet) · Auxiliaries · Decorations and punishments · Hippika gymnasia Culture Theatre · Cuisine · Education · School · Literature · Art · Music · Architecture · Religion (Funeral • Persecution • Imperial cult) · Mythology · Hairstyle · Public Baths (Thermae)  · Forum · SPQR · Clothing · Chronology (Ab urbe condita · Roman calendar (Julian) · Festivals) · Circus · Wine · Prostitution · Deforestation · Romanization · Cosmetics Technology Numerals · Arithmetic · Abacus · Civil engineering · Military engineering · Military technology · Roads  · Bridges  · Aqueducts  · Metallurgy  · Concrete · Sanitation Roman economy Economy · Agriculture · Commerce · Finance · Currency · Republican currency  · Imperial currency Language (Latin) History · Romance languages (Versions) Old · Classical · Vulgar · Late · Medieval · Renaissance · New · Recent · Ecclesiastical Writers Apuleius · Catullus · Cicero · Curtius Rufus · Horace  · Julius Caesar · Juvenal · Livy · Lucretius · Ovid · Petronius · Plautus  · Pliny the Elder · Pliny the Younger · Propertius · Sallust · Seneca · Suetonius · Tacitus · Virgil · Vitruvius Lists Topics · Wars · Battles · Generals · Legions · Emperors · Geographers · Institutions · Laws · Consuls · Distinguished women Portal