Complex sentence: The chase would take them as far as present day Madison, Wisconsin, and end at the Battle of Bad Axe, where the militia and its allies would massacre a weakened foe, by then made up of mostly women and children.
Split into simpler sentences: The chase would take them as far as present day Madison, Wisconsin. It ended at the Battle of Bad Axe, where the militia and its allies massacred a weakened foe, by then made up of mostly women and children.