The Most Disciplined Man in History? - Titus Manlius Torquatus 

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Primary sources:
Liv. vii. 4, 5,10,19, 26-28, viii. 3-12 ,
Cic. de Off. iii. 31, de Fin. i. 7, ii. 19, 22, Tusc. iv. 22;
Val. Máx. vi. 9. § 1, I. 7. § 3, II. 7 . § 6;
Gell. I. 13;
Dio. Fragm. 34, p. 16, Reim.;
Aurel. Vict. de Vir. III. 28.
Secondary sources & suggested readings:
Zhmodikov, A. 2000. Roman Republican Heavy Infantrymen in Battle (IV-II Centuries B.C.). Historia: Zeitschrift für Alte Geschichte, Bd. 49, H. 1 (1st Qtr., 2000), pp. 67-78.
Sabin, P. 2000. The Face of Roman Battle. The Journal of Roman Studies, Vol. 90, 2000, pp. 1-17.
Sabin, P., Van Wees, H., Whitby, M. (eds.). 2008. The Cambridge History of Greek and Roman Warfare Volume I: Greece, The Hellenistic World and the Rise of Rome. Cambridge: Cambridge University Press.
Erdkamp, Paul. 2007. A Companion to the Roman Army. Oxford: Blackwell Publishing.
Cowan, R. 2017. For the Glory of Rome: A history of warriors and warfare. Barnsley: Frontline Books.
Armstrong, J. y M. P. Fronda. 2020. Romans at War: Soldiers, Citizens and Society in the Roman Republic. London: Routledge, Taylor & Francis Group.
Armstrong, J. 2013. “Bands of Brothers”: Warfare and Fraternity in Early Rome. JAH, 1 (1) (2013): pp. 53-69.
Oakley, S. P. “Single Combat in the Roman Republic”: The Classical Quarterly, New Series, Vol. 35, No. 2 (1985), pp. 392-410.
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Making of a legend (2:52)