Complex sentence: Following its return to the front during the Hundred Days Offensive, the division saw action at the Battle of Cambrai as part of XIII Corps in the Fourth Army, which broke through the German front and advanced several miles.
Split into simpler sentences: Following its return to the front lines during the Hundred Days Offensive, the division saw action at the Battle of Cambrai. Here, it was part of XIII Corps in the Fourth Army, which broke through the German front lines and advanced forward several miles.