Janusz Radziwiłł took up defensive position on the northern shore of the Neris river near the present-day Green Bridge to cover the evacuations. The battle started around 6 a.m. on 8 August 1655 and lasted the whole day. The Lithuanians managed to capture three Russian flags. At night, the Lithuanian army split into two groups that retreated to Vilkaviškis and to Kėdainiai. The garrison of the Vilnius Castle Complex surrendered two days later. The invading forces plundered the city and murdered its inhabitants for several days. A fire consumed part of the city. Tsar Alexis of Russia arrived to the city on 14 August. The city was so badly devastated that he could not find suitable accommodations in the city and instead built a large tent in .