Complex sentence: Both Kaji, and Nosaka indoctrinated Japanese prisoners of war (POWs) to defect from the Imperial Japanese Military, which led to scores of Japanese POWs defecting, and engaging in propaganda work against Imperial Japan.
Split into simpler sentences: Both Kaji, and Nosaka indoctrinated Japanese prisoners of war (POWs) to defect from the Imperial Japanese Military. Due to their indoctrination programs, scores of Japanese POWs defected, and engaged in propaganda work against Imperial Japan.