Complex sentence: He believed that Saint-Domingue would need ex-slave soldiers among the ranks of the colonial army if it was to survive and on August 1793 he proclaimed freedom for all slaves in the north province.
Split into simpler sentences: He believed that Saint-Domingue would need ex-slave soldiers among the ranks of the colonial army if it was to survive. On August 1793, he proclaimed freedom for all slaves in the north province.