Complex sentence: The 6th Army of the NRA, with its large contingent of communists soldiers, systematically looted the homes and businesses of the foreign residents, and one American, two British, one French, an Italian, and a Japanese were killed by Chinese soldiers.
Split into simpler sentences: The 6th Army of the NRA, with its large contingent of communists soldiers, systematically looted the homes and businesses of the foreign residents. An American, two British, one French, an Italian, and a Japanese were killed by Chinese soldiers.