Siege of Pskov

The siege of Pskov, known as the Pskov Defense in Russia, took place between August 1581 and February 1582, when the army of the Polish king and Grand Duke of Lithuania Stephen Báthory laid an unsuccessful siege and successful blockade of the city of Pskov during the final stage of the Livonian War of 1558–1583.

The first detachments of the Polish–Lithuanian army, which in the previous two years captured Polotsk and Velikiye Luki, appeared at the walls of Pskov on August 18, 1581. This action completely cut off Russian forces from the territory of Livonia. The main invading force laid siege to the city on August 24-26. Prince Vasili Skopin-Shuisky was nominally in charge of the defense of Pskov, but Prince Ivan Shuisky was the one to actually implement it. The latter had up to 4,000 dvoryane, streltsy, and Cossacks and some 12,000 armed citizens of Pskov and its surroundings at his disposal.

Source: Wikipedia