Battle of Ongal
Battle of Ongal Part of the Byzantine-Bulgarian Wars The foundation of the First Bulgarian Empire. The army of Asparukh is in red. The army of Constantine IV is in blue. Date Summer, 680 Location The Ongal area probably in Danube delta (present-day Tulcea County, Romania) Result Decisive Bulgar victory, formation of Bulgaria Belligerents Bulgars Byzantine Empire Commanders and leaders Asparukh Constantine IV Strength around 10-12,000 [1] [2] "all the themata" [3] from 15 - 25,000 [4] [5] [6] up to: 50,000 [7] Casualties and losses Light Heavy v t e Byzantine–Bulgarian wars Early wars Ongal 1st Anchialus 1st Marcellae Rishki Pass 2nd Anchialus Litosoria 2nd Marcellae Krum's campaigns Serdica Pliska Debeltos Versinikia 1st Adrianople Burdizon Simeon I's campaigns War of 894–896 Boulgarophygon War of 913–927 Achelous Katasyrtai Pegae Constantinople Sviatoslav'