Complex sentence: The "Chronicle of Melrose" offers only a brief description of the battle, but does not bother recording its location, and actually ascribes the campaign's failure more to the power of God rather than to the Scots.
Split into simpler sentences: The "Chronicle of Melrose" offers only a brief description, and does not bother recording its location. It actually ascribes the campaign's failure more to the power of God than to that of the Scots.