The siege of Uman was conducted the PolishâÂÂLithuanianâÂÂCrimean forces against the Cossack garrison of Uman, on 2âÂÂ4 April 1654.
In March, 1654, PolishâÂÂLithuanian forces conducted offensive actions in Bratslav and Vinnytsia. This was done at the request of John II Casimir who believed in importance of securing these regions. On March 22, Stanisà Âaw and Piotr Potocki joined their forces, which now consisted of 8,000 troops. Ivan Bohun retreated from Vinnytsia to Uman where he was pursued to by the PolishâÂÂLithuanian forces.
On April 2, PolishâÂÂLithuanian forces besieged Uman, where Bohun organised a defense. PolishâÂÂLithuanian forces viewed Uman as the "nest of rebellion" which they sought to eliminate in order to acquire full control. PolishâÂÂLithuanian forces attempted to lure Bohun and his Cossacks out of the fortress in order to "negotiate" with them, but they ignored this request. Potockis and Czarniecki were unable to use trickery in their favour. Poles assaulted the city and heavily damaged it. Nonetheless, all PolishâÂÂLithuanian attacks were repelled after heavy fighting and Uman remained in Cossack hands. On April 4, PolishâÂÂLithuanian army lifted the siege and retreated after the news of incoming Cossack reinforcements.
Bohun organised a successful defense of Uman. Bohun, Sirko and Glukh repelled all PolishâÂÂTatar attacks on Uman. PolishâÂÂLithuanian army burnt up to 20 cities and towns during their campaign. PolishâÂÂLithuanian troops massacred civilians in Nemyriv. The campaign revealed the hostility of local population towards PolandâÂÂLithuania. In January 1655, PolishâÂÂLithuanianâÂÂCrimean forces launched another assault on Uman.