Titus Labienus, born around 100 BC. AD and died March 17, 45 BC. J.-C., is a Roman general, one of Caesar's main lieutenants during the Gallic Wars. His family would have been part of the Atia gens.
He began to serve in Cilicia around 78-74 BC. AD under the command of Servilius.
In 63 BC. BC, at Caesar's request, Labienus prosecuted Gaius Rabirius for treason. In the same year, as tribune of the plebs, he organized a plebiscite which secured Caesar the office of pontifex maximus (Dion Cassius xxxvii. 37). He served as legate during Caesar's campaigns in Gaul and replaced Caesar when he returned to Rome.
His main exploits in Gaul were to defeat the Treveri under Indutiomarus in 54 BC. AD, his expedition against Lutetia in 52 and his victory over Camulogenus and the Aedui that same year. He was Caesar's friend and chief aide during the Gallic Wars, as well as a talented cavalry commander. At the start of the Civil War, he was one of the first to switch sides, apparently blaming Caesar for his lack of recognition.
He was greeted with joy by the supporters of Pompey, bringing with him 3700 Gallic and German horsemen. However, this decision turned out to be wrong. After the defeat of Pharsalus, he fled to Corcyra and from there to Africa. Despite weak forces, he was able to inflict a significant defeat on Caesar there at the Battle of Ruspina in 46 BC. AD. After the defeat of Thapsus, he joined Pompey the Younger in Hispania, and was killed in the Battle of Munda.
His son was Quintus Labienus.