11 events the sources record for this year, grouped by region.
What happened
China (3)
Wu's Shi Ji entered Jiangxia and Wan Yu attacked Xiangyang. Prince Wang of Yiyang Sima Wang was stationed at Longbei, and Jingzhou Governor Hu Lie defeated Wan Yu. (Book of Jin (Jinshu), Imperial Annals 晉書 卷003 帝紀 泰始4年10月)
Yang Ji sent Mao Jiong and Dong Yuan to attack Hepu; at Gucheng they greatly defeated the Wu troops and killed Liu Jun and Xiu Ze. (Zizhi Tongjian (Comprehensive Mirror) 卷079 268년 단락10 제2문)
In the eleventh month Wu's Ding Feng and Zhuge Jing came out to Shaobei and attacked Hefei, but Andong General Sima Jun repelled them. (Zizhi Tongjian (Comprehensive Mirror) 卷079 268년 단락11 제1문)
West Asia (1)
When many ships collide and sink in the strong currents of the Propontis, the barbarians head for Cyzicus but return with nothing to show. (Zosimus, New History Zos. 1 (1814 영역) p.23)
Southern Europe (7)
Gallienus, attacking Milan, where Aureolus is shut in, with every kind of siege engine, is killed by his own men. (Aurelius Victor, De Caesaribus Aur. Vict. Caes. 33.19)
Gallienus is killed at Milan along with his brother Valerian. (Eutropius, Breviarium Eutr. 9.11)
On news that Aureolus, the cavalry commander watching Postumus near Milan, aims at the throne, Gallienus hurries back to Italy. (Zosimus, New History Zos. 1 (1814 영역) p.22)
Gallienus, given a false report at a late supper through a plot by the praetorian prefect Heraclianus and Claudius, rides out alone and is killed by the Dalmatian cavalry commander. (Zosimus, New History Zos. 1 (1814 영역) p.22)
Scythians, Heruli and Goths gathered at the River Tyras cross the Black Sea in 6,000 ships and attack Tomis, but are repulsed. (Zosimus, New History Zos. 1 (1814 영역) p.22)
The same horde also strikes Marcianopolis in Moesia without success and continues onward with a fair wind. (Zosimus, New History Zos. 1 (1814 영역) p.22)
After refitting their ships at Mount Athos, the Scythians nearly take Cassandreia and Thessalonica with siege engines, but retreat inland at news that the emperor is coming with an army. (Zosimus, New History Zos. 1 (1814 영역) p.23)