Complex sentence: In Wuhan, he worked to re-educate Japanese prisoners of war and in December 1939 formed the Japanese People's Antiwar Alliance (Nihonjin Hansen Domei); the Nationalist government dissolved the group in 1941, believing its members too sympathetic to communism.
Split into simpler sentences: In Wuhan, he worked to re-educate Japanese prisoners of war and in December 1939 formed the Japanese People's Antiwar Alliance (Nihonjin Hansen Domei). The Nationalist government dissolved the group in 1941, believing its members too sympathetic to communism.