The Battle of Zhovnyn was an engagement between the Polish–Lithuanian Commonwealth forces under hetman Mikołaj Potocki, supported by the forces under magnate Jeremi Wiśniowiecki, and Cossacks commanded by Yakiv Ostryanyn (Polish: Jakub Ostrzanin) and Dmytro Hunia during the Ostryanyn Uprising in Summer 1638.
[1] After the uprising, the Sejm passed a law setting the number of registered Cossacks at 6,000, and declaring all others peasants.
[2] After three charges, which he led personally, and in one which he lost a horse, Wiśniowiecki succeeded in breaking back through the Cossack fortifications and returning to the Polish camp that evening.
In the end, only a part of them broke through to the Cossack camp, and Skidan himself would be captured during the assault on 16 June.
[4] Before Polish reinforcements under Hetman Mikołaj Potocki arrived around 21 June, the Cossacks under Hunia succeeded in building a bridge in the night and moving the entire camp to a new location nearby.
[6] To bypass the Polish cordon, Filonenko used river boats (czajki) to approach the camp.