Complex sentence: They are saved by the timely arrival of Colonel Dragomirov (Velibor Topic) and his cavalry squadron, but with Dragomirov pursuing the retreating bandits and no one more qualified in the train, Sharpe is forced to take command.
Split into simpler sentences: They are saved by the timely arrival of Colonel Dragomirov (Velibor Topic) and his cavalry squadron. With no one more qualified, Sharpe is forced to take command.