Complex sentence: Recovering from his wounds, he lay in wait for the right time to flee to South Korea but was once more betrayed and captured by the Communists, who subsequently sentenced him to death a second time.
Split into simpler sentences: Recovering from his wounds, he was waiting for the right moment to flee to South Korea. But then again Kim Chang-Ryong was betrayed and captured by the Reds, who sentenced him to death a second time.