Original sentence: It should be noted, however, that many of the soldiers who accompanied the prisoners of war were not only Japanese, but Korean.Since they were not trusted by the Japanese to fight on the battlefield, most Koreans in the Japanese army were forbidden to participate in combat roles and delegated to such service duties as guarding prisoners
Edited sentence: Having to endure severe racism and torture under the Japanese soldiers, several Korean conscripts vented their frustration and anger on the POWs.It should be noted, however, that some of the soldiers who accompanied the prisoners of war were Korean conscripts.Many Koreans served as conscripted soldiers in the Japanese Imperial forces against their own will, and were coerced to join the Japanese in their atrocities or to carry out suicide attacks solely to stop the torture and beatings of their fellow Korean conscripts.Since they were often mistreated by the Japanese and therefore not trusted to fight in the battlefield, most Koreans in the Japanese army were forbidden to participate in combat roles and delegated to such service duties as guarding prisoners