598

598 in various
AG
Thai solar calendar	1140–1141
Tibetan calendar	阴火蛇年; (female Fire-Snake); 724 or 343 or −429; — to —; 阳土马年; (male Earth-Horse); 725 or 344 or −428

Millennium:	1st millennium
Centuries:	5th century; 6th century ; 7th century;
Decades:	570s; 580s; 590s ; 600s; 610s;
Years:	595; 596; 597; 598 ; 599; 600; 601;

Year 598 (DXCVIII) was a common year starting on Wednesday (link will display the full calendar) of the Julian calendar. The denomination 598 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.

Events

Avars lift the siege of the fortress city of Tomis (modern Romania). A Byzantine army under Comentiolus crosses the Balkan Mountains, and marches along the Danube River to Zikidiba.^[1]

The Avars rout the Byzantine forces of Comentiolus (south of
Drizipera (Thrace). A large part of their troops are killed by the plague, after many cities are devastated in the Balkan Peninsula.^[1]

Emperor Maurice pays tribute to the Avars and concludes a treaty with their leader Bayan I, allowing Byzantine expeditions in Wallachia.^[2] He reorganises his army and strengthens the Long Walls (west of Constantinople).^[3]

Maurice makes peace with King Agilulf, conceding northern Italy. Pope Gregory I the Great negotiates a truce, ending 30 years of Lombard terror. Agilulf expands the Lombard Kingdom by occupying Sutri and Perugia.

Brythonic king of Hen Ogledd ("The Old North"), defeat the Angles of Bernicia and Deira, at the stronghold of Catraeth in Northern England
(approximate date).

August 4 – Goguryeo War: Emperor Wéndi orders his youngest son, Yang Liang (assisted by the co-prime minister Gao Jiong), to conquer Goguryeo (Korea) during the rainy season, with a Chinese army (300,000 men).
The Chinese fleet engages in battle against the Goguryeo fleet (50,000 men) under Admiral Gang Yi-sik, and is destroyed in the Bohai Sea. During the invasion the Sui forces are all defeated, and Yang Liang is forced to retreat.
King
Sui Dynasty
lost nearly 90% of his army and navy during the disastrous campaign.
Hye becomes king of the Korean kingdom of Baekje.^[4]

Missionaries begin to convert the Anglo-Saxons to Christianity throughout much of what will later be the British Isles (approximate date).
The Guoqing Temple is built on Mount Tiantai (Zhejiang), and becomes the site for the teachings of Chinese Buddhism.

^ ^a ^b Whitby (1998), p. 162
^ Pohl (2002), p. 154
^ Whitby (1998), p. 163
^ ^a ^b "List of Rulers of Korea". www.metmuseum.org. Retrieved April 21, 2019.

Millennium:	1st millennium
Centuries:	5th century 6th century 7th century
Decades:	570s 580s 590s 600s 610s
Years:	595 596 597 598 599 600 601