Complex sentence: Following Operation Cobra, the allied breakout from Normandy, Major-General Troy H. Middleton's U.S. VIII Corps hooked left from Normandy and attacked the Brittany region.
Split into simpler sentences: Following Operation Cobra, the allied breakout from Normandy, Mj. Gen. Troy H. Middleton's U.S. VIII Corps hooked left from Normandy and attacked into the Brittany region.