Complex sentence: Communist casualties included 245 dead left on the battlefield and three captured, while many more were thought to have been removed as the North Vietnamese and Viet Cong force withdrew and others had been so badly mutilated that their remains were unidentifiable.
Split into simpler sentences: Communist casualties included 245 dead left on the battlefield and three captured, while many more were thought to have been removed as the North Vietnamese and Viet Cong force withdrew. Others had been so badly mutilated that their remains were unidentifiable.