Complex sentence: An envious Kikuchiyo abandons his post--and his contingent of farmers--to bring another of the muskets back to camp; the leaderless farmers, meanwhile, are attacked, and some, including Yohei, are killed.
Split into simpler sentences: An envious Kikuchiyo abandons his post--and his contingent of farmers--to bring another of the muskets back to camp. The leaderless farmers, meanwhile, are attacked, and some, including Yohei, are killed.