Complex sentence: The episode "Aces Back to Back" reveals that the Mr. Lucky of the series is a veteran of the United States Navy, and in the episode "Odyssey of Hate", he demonstrates that he still knows how to manipulate an M-1 rifle.
Split into simpler sentences: The episode "Aces Back to Back" reveals that the Mr. Lucky of the series is a veteran of the United States Navy. In the episode "Odyssey of Hate", Lucky demonstrates that he still knows how to manipulate an M-1 rifle.