Complex sentence: Benbow's repition of these eventually came to Booth's knowledge, and the captain brought a court-martial against Benbow, however this revealed that Benbow had only been repeating these words rather than being their originator.
Split into simpler sentences: Benbow's repition of these eventually came to Booth's knowledge. Booth brought a court-martial against Benbow, which brought the acknowledgement that Benbow had only been repeating these words rather than being their originator.