Original sentence: It repelled several Muscovite attacks, but in July 1514 a Muscovite army of 80,000 men and 300 guns besieged and finally captured it.The fortress of Smolensk was then the easternmost outpost of the Grand Duchy and one of the most important strongholds guarding it from the east
Edited sentence: It repelled several Muscovite attacks, trying to liberate the city, but in July 1514 a Muscovite army of 80,000 men and 300 guns besieged and finally captured it.The occupied Russian fortress of Smolensk was then the easternmost outpost of the Grand Duchy and one of the most important strongholds in the east