Complex sentence: Thus he passed successively into the hands of the Scots, the Parliament and the New Model Army (henceforward called the Army), trying to reverse the verdict of arms by coquetting with each in turn.
Split into simpler sentences: Thus he passed successively into the hands of the Scots, the Parliament and the New Model Army (henceforward called the army). The King attempted to reverse the verdict of arms by coquetting with each in turn.