Complex sentence: On August 3,2014, many families from Bartella left the city to Erbil, Ankawa and Shekhan, due to the battles between ISIL fighters and the Peshmerga forces to retake ISIL-controlled Gogjali district west of Bartella.
Split into simpler sentences: On August 3,2014, many families from Bartella left the city to Erbil, Ankawa and Shekhan, due to attacks by ISIL fighters. The Peshmerga forces were fighting them to retake ISIL-controlled Gogjali district west of Bartella.