In the middle of the 15th century, the Vologda Lands were strongly involved with the Muscovite Civil War: Thus, Vasily the Blind was exiled to Vologda in 1446 and was released from his allegiance oath by the hegumen of the Kirillo-Belozersky Monastery, and by the late 1440s the Sukhona valley became the battlefield between the retreating army of Dmitry Shemyaka and the army of Vasily, chasing Shemyaka. During the Time of Troubles, the area was ravaged by Polish troops, who at some point besieged Vologda but did not succeed in conquering the city.