Battle of Biržai

They took place on May 7–9, 1863, in the area of Lithuanian town of Biržai, at the time part of the Russian Empire's Kaunas Governorate.

In early May 1863, Sierakowski and his men tried to break through Russian cordon to Courland, where a maritime transport with weapons was announced.

They were faced by troops of the Imperial Russian Army, which included Cossacks, uhlans, infantry and Finnish riflemen.

After a heavy fight, the rebels, reinforced with additional forces sent by Sierakowski, managed to kill 65 and wound 75 Russians.

On May 9, 1863, new rebel commandant, Ignacy Laskowski, ordered his forces to camp in a forest near Šniurkiškiai [lt].