Complex sentence: He arrived in Moncton near midnight on November 12, and the tide of the Petitcodiac River prevented him from sending more than twelve men, who came back the next morning with 16 prisoners.
Split into simpler sentences: He arrived in Moncton near midnight on November 12, but the tide of the Petitcodiac River prevented him from sending more than twelve men. They came back the next morning with 16 prisoners.