Complex sentence: This did not signal the end of the war, however, as soon after, Skanderbeg took up some assaults on Elbasan after being urged to by Venice, but was not able to take the fortress due to a lack of artillery.
Split into simpler sentences: This did not signal the end of the war, however. Soon after, Skanderbeg took up some assaults on Elbasan after being urged to by Venice, but was not able to take the fortress due to a lack of artillery.