Complex sentence: One of his first actions after taking office was to immediately punish deserters and a pair of Ming commanders, along with Li Ruzhen who had fled from the Battle of Tieling, were captured and executed.
Split into simpler sentences: One of his first actions after taking office was to immediately punish deserters. A pair of Ming commanders along with Li Ruzhen, who had fled from the Battle of Tieling, were captured and executed.