Complex sentence: During the Serbian attack on Vukovar, the water tower was one of the most frequent target of enemy artillery that made it more then 600 damages, so it today represents a symbol of victory and new life.
Split into simpler sentences: During the Serbian attack on Vukovar, the water tower was one of the most frequent targets of the enemy artillery. It was hit more then 600 time and today it is a symbol of victory and new life.