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Aelianus Tacticus (Ancient Greek: Αἰλιανός ὁ Τακτικός) (fl. second century AD), also known as Aelian, was a Greek military writer who lived in Rome.

Aelian's military treatise in fifty-three chapters on the tactics of the Greeks, titled On tactical arrays of the Greeks (Περί Στρατηγικών Τάξεων Ελληνικών), is dedicated to the Emperor Hadrian, though this is probably a mistake for Trajan, and the date 106 AD has been assigned to it. It is a handbook of Greek, i.e. Macedonian, drill and tactics as practiced by the Hellenistic successors of Alexander the Great. The author claims to have consulted all the best authorities, the most important of which was a lost treatise on the subject by Polybius. Perhaps the chief value of Aelian's work lies in his critical account of preceding works on the art of war, and in the fullness of his technical details in matters of drill.[1]

He also gives a brief account of the constitution of a Roman army at that time. The work arose, he says, from a conversation he had with the emperor Nerva at Frontinus's house at Formiae. He promises a work on Naval Tactics also; but this, if it was written, is lost.[2]

Critics of the 18th century — Guichard Folard and the Prince de Ligne — were unanimous in thinking Aelian greatly inferior to Arrian, but Aelian exercised a great influence both on his immediate successors, the Byzantines, and later on the Arabs, (who translated the text for their own use). Emperor Leo VI the Wise incorporated much of Aelian's text in his own work on the military art (Τέχνη Τακτική). The Arabic version of Aelian was made about 1350. It was first translated into Latin by Theodore Gaza, published at Rome in 1487.[2] The Greek editio princeps was edited by Francesco Robortello and published at Venice in 1552.

In spite of its academic nature, the copious details to be found in the treatise rendered it of the highest value to the army organizers of the 16th century, who were engaged in fashioning a regular military system out of the semi-feudal systems of previous generations. The Macedonian phalanx of Aelian had many points of resemblance to the solid masses of pikemen and the squadrons of cavalry of the Spanish and Dutch systems, and the translations made in the 16th century formed the groundwork of numerous books on drill and tactics.

The first significant reference to the influence of Aelian in the 16th century is a letter to Maurice of Nassau, Prince of Orange from his cousin William Louis, Count of Nassau-Dillenburg on December 8, 1594. The letter is influential in supporting the thesis of the early-modern Military Revolution. In the letter William Louis discusses the use of ranks by soldiers of Imperial Rome as discussed in Aelian's Tactica. Aelian was discussing the use of the counter march in the context of the Roman sword gladius and spear pilum. William Louis in a 'crucial leap' realized that the same technique could work for men with firearms.[3]


  2. 2.0 2.1 Allen, Alexander (1867). "Dictionary of Greek and Roman Biography and Mythology". In Smith, William. p. 29. 
  3. Military Revolutions, Past and Present by Geoffrey Parker in Recent Themes in Military History. Ed Donald A Yerxa. University of South Carolina Press 2008 p13

Other sourcesEdit

  • Public Domain This article incorporates text from a publication now in the public domain: Chisholm, Hugh, ed. (1911) Encyclopædia Britannica (11th ed.) Cambridge University Press 
  • PD-icon.svg This article incorporates text from a publication now in the public domain: Smith, William, ed (1870). "article name needed". Dictionary of Greek and Roman Biography and Mythology. 

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