Complex sentence: He made no further serious resistance to the parliamentary general, but wasted his time in frivolous amusements, and in November 1645 he obtained leave to quit his disorganised forces and retire to France on the ground of health.
Split into simpler sentences: He made no further serious resistance to the parliamentary general, but wasted his time in frivolous amusements. In November 1645 he obtained leave to quit his disorganised forces and retire to France on the ground of health.