If the third period was relatively quiet the fourth was absolutely stirring. There had undoubtedly been more or less fighting along the Danube frontier during the preceding years, but early in this period there was a most important campaign against the Sarmatians, in which they were defeated and their king taken prisoner. 3029
In honor of this victory coins were struck (Eckhel, Doct. Num. Vet. 8 (1827) 87). But this was only skirmishing; afterwards came the tug of war. Nine years of peace proved the utmost limit of mutual patience, and Constantine and Licinius came to words, and from words to blows. For a long time Constantine had been vexed at the persecution of the Christians by Licinius (cf. Euseb. H. E. 10. 8, 9), persecutions waged perhaps with the express purpose of aggravating him. 3030
Licinius, on the other hand, naturally chagrined over the previous loss of territory, knowing of Constantine’s indignation over his persecutions, and perhaps suspecting him of further designs, was naturally suspicious when Constantine passed within his boundaries in pursuing the Sarmatians (Anon. Vales. p. 474). Mutual recriminations and aggravations followed. Licinius would not let the Sarmatian coins pass current and had them melted down (Anon. Contin. Dio. Cass., in Müller, Fragm. Hist. Gr. 4 [1868] 199). Altogether they soon came to blows. The steps were short, sharp, decisive. Constantine defeated Licinius by land (July 3, 323), and through Crispus, by sea (Soz. 1. 7; Anon. Vales. p. 474–5; Zos. 2. 22–3). After the defeat at Adrianople, Licinius retreated to Byzantium (Zos. 2. 23–5; Vict.
Zos. 2. 21. An exhaustive discussion of this is that by Bessell, Gothen, in Ersch u. Gruber, Encykl. I. 75 (Leipz. 1862), 132–33. The same article (p. 133–35) discusses various relations of Goths and Sarmatians with Constantine.
418:3030According to Sozomen, Licinius withdrew his favor from Christians and persecuted them, because “He was deeply incensed against the Christians on account of his disagreement with Constantine, and thought to wound him by their sufferings; and, besides, he suspected that they earnestly desired that Constantine should enjoy the sovereign rule” (1. 7). In this view of the case, it is easy to see how and why affairs marched as they did. Eusebius (H. E. 10. 9) makes this, like the war against Maxentius, a real crusade in behalf of the persecuted Christians.
419:3031According to Zos. 2. 27, the final siege and surrender was at Nicomedia.
419:3032Compare note on Bk. II. ch. 18.
419:3033For his presence at Rome at this time, compare authorities above, and also law dated July, 326, given in Clinton (p. 380).
