Complex sentence: Empress Lei-Qo, leader of the Solar Empire, forms an alliance with Western Frontier, after taking back several islands from Xylvanian control, Vlad angrily orders a retreat, freeing the Solar Empire.
Split into simpler sentences: Empress Lei-Qo, leader of the Solar Empire, forms an alliance with Western Frontier. After several islands have been taken back from Xylvanian control, Vlad angrily orders a retreat, freeing the Solar Empire.