4. Cn.DomitiusCalvinus, M. F. M. N., appears, in B. C. 62, as legate of L. Valerius Flaccus in Asia, and in B. C. 59 as tribune of the people, in which capacity he supported the consul M. Bibulus against the other consul, C. Julius Caesar, and the
For some years we now lose sight of Calvinus; but after the outbreak of the civil war in B. C. 49, we find him actively engaged in the service of Caesar's party, and commanding the cavalry under Curio in Africa. After the unfortunate battle on the Bagradas, he advised Curio to take to flight, and promised not to forsake him. In the year following, Caesar sent Calvinus with two legions from Illyricum to Macedonia, where he met Metellus Scipio, without however any decisive engagement taking place between them. But, according to Dio Cassius (41.51), he was driven by Faustus from Macedonia, and penetrated into Thessaly, where he gained a victory over Metellus Scipio, and took several towns. When Caesar broke up from Dyrrhachium to unite his forces with those of Calvinuis, the latter was in the north of Macedonia, and had nearly fallen into the hands of Pompey, but succeeded in effecting his union with Caesar on the frontier of Thessaly. In the battle of Pharsalia Calvinus commanded the centre, and was faced by Metellus Scipio.
After the close of the war in Thessaly, when Caesar went to Egypt, he entrusted to Calvinus the administration of the province of Asia and the neighbouring countries. While Caesar was engaged in the Alexandrine war, for which Calvinus sent him two legions from Asia, the latter became involved in a war with Pharnaces, the son of Mithridates; he was defeated in the neighbourhood of Nicopolis, and escaped with only a few remnants of his small army. After his return from Egypt, Caesar defeated Pharnaces near Zela, and Calvinus was sent to pursue the enemy, who was compelled to surrender Sinope. But soon after, a peace was concluded with him. As Caesar wanted to hasten to Italy, he left Calvinus behind to complete the settlement of the affairs in Asia. This does not appear to have occupied much time, for in the year following, B. C. 46, we find him engaged in Africa in besieging Considius at Thisdra, and in B. C. 45, he was present at Rome at the time when Cicero defended king Deiotarus. Caesar appointed Calvinus his magister equitum for the year following, but the murder of the dictator prevented his entering upon the office.
During the war of Octavianus and Antony against the republicans, Calvinus was ordered by the former to bring over reinforcements from Brundusium to Illyricum; but while crossing the Ionian sea, he was attacked by L. Statius Murcus and Cn. Domitius Ahenobarbus. His ships were destroyed, and he himself succeeded with great difficulty in escaping back to Brundusium. In B. C. 40 he was elected consul a second time; but before the end of the year, he and his colleague were obliged to resign, in order to make room for others. In the year following, he fought as proconsul against the revolted Ceretani in Spain. Here he acted with the greatest rigour towards his own soldiers, and afterwards defeated the enemy without difficulty. His occupations in Spain, however, appear to have lasted for several years, for the triumph which he celebrated for his exploits in Spain is assigned in the triumphal Fasti to the year B. C. 36. The sums of money which he had raised in the towns of Spain were spent partly on the celebration of his triumph, and partly upon the restoration of the regia on the via sacra, which had been burnt down. (Orelli, Onom. Tull. ii. p. 226; D. C. 38.6, 40.45, 46, 56, 42.46, 49, 47.47, 48.15, 32, 42; Plut. Pomp. 54, Caes. 44, 50, Brut. 47; Appian, App. BC 2.76, 91, 4.115, 116, Mithrid. 120; Caes. Civ. 2.42, 3.36, &100.78, &c., 89, Bell. Alex. 34, &c., 86, 93; Liv. Epit. 112; Vell. 2.78; Suet. Jul. 35, &c.; Fast. Cap.; Eckhel, v. p. 183.)
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