Complex sentence: Collins reported that the mounted charge was successful, although two men were killed, one of whom was Pvt. William H. Hartshorn of Company C, 11th Ohio Cavalry, whose body was recovered containing 97 arrows.
Split into simpler sentences: Collins reported that the mounted charge was successful, although two men were killed. One soldier killed was Private William H. Hartshorn of Company C, 11th Ohio Cavalry, whose body was recovered containing 97 arrows.