Battle of Kupa

The Battle of Kupa occurred at Kupa river in 819. It involved Frankish vassal Duke Borna of Dalmatia, with an army of Guduscani, against the advancing army of Frankish rebel, Duke Ljudevit of the Slavs in Lower Pannonia. During the battle, the Guduscans abandoned Borna and joined Ljudevit. While Borna's forces suffered massive losses, he managed to escape with his bodyguards. However, Dragomuž, Ljudevit's father-in-law, who sided with Borna, was killed. Ljudevit suffered heavy casualties that included 3,000 soldiers and over 300 horses. Afterwards, Ljudevit used the momentum to invade Dalmatia in December 819.

Battle of Kupa
Date 819 Location Near the Kupa river, March of Pannonia (in modern Slovenia or Croatia)
Belligerents
Ljudevit	Borna
Strength
Unknown	Unknown

Sources

• Horvat, Rudolf (1924). "15. Ljudevit Posavski". Povijest Hrvatske I. (od najstarijeg doba do g. 1657.) (in Croatian).