Atlas of Battles

siege, ancient

Siege of Byzantium

Siege of Byzantium was a siege conducted in AD 324 at Byzantium, in what is now Turkey. The recorded result: Constantinian victory.

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Constantine I 307-337 AD. Æ en:Follis (2.97 gm). Struck 337 AD. Constantinople mint. CONSTANTI-NVS MAX AVG, laureate head right SPES PVBLICA across field, labarum, with three medallions on drapery and
Constantine I 307-337 AD. Æ en:Follis (2.97 gm). Struck 337 AD. Constantinople mint. CONSTANTI-NVS MAX AVG, laureate head right SPES PVBLICA across field, labarum, with three medallions on drapery and. CNG.[1], CC BY-SA 3.0, via Wikimedia Commons.
FoughtAD 324
WhereByzantium, Turkey41.015N, 28.985E
OutcomeConstantinian victory
BelligerentsConstantine IagainstLicinius

Record

DateAD 324 (year precision)
PlaceByzantium, Turkey
41.015N, 28.985E
KindSiege, ancient
Commanders
Siege of ByzantiumSiege of ByzantiumSiege of ByzantiumSiege of ByzantiumSiege of ByzantiumSiege of ByzantiumSiege of ByzanceSiege of ByzantiumBursaAdapazarıİzmitTekirdağLüleburgazKırklareliBilecik100 km41.015N, 28.985E
The recorded site, with the nearest other engagements in the atlas. Present-day coastlines, rivers and borders; towns from Natural Earth.

Nearest engagements

Contested ground: this site was fought over 43 times between 510 BC and 1453.

Elsewhere in AD 324

Siege of Byzantium is one of 65 engagements of the 4th century in the atlas and one of 622 in present-day Turkey.

Sources

Identity, coordinates, dates and the war from Wikidata Q3625453, released under CC0. Result, belligerents, commanders, strength and casualties from the infobox of the English Wikipedia article Siege of Byzantium (324), revision 1370739918, read 2026-11-14, licensed CC BY-SA 4.0; the article's text is not reproduced here. Present-day country and state from Natural Earth. Dates before 1582 follow the Julian calendar as recorded.