Soldiers who committed atrocities in wars and PTSD

Is there any research on whether soldiers who committed atrocities during the war develop PTSD just from these acts specifically. I saw a report with a sniper who had to kill someone close up once and he felt absolutely sick to his stomach afterwards because he realized that this was just another person like anyone else. I think he developed PTSD after. Then I remember seeing the news about Russians invading Ukraine and almost immediately you heard about the gang rapes of Ukrainian women. I remember seeing a photo of a tarp over what was described as a pile of naked dead women. This was in the beginning of the war so I don't know how much horrors the soldiers had seen yet, but I imagine what happened to the women was horrific and it may have been considered fun by some of the soldiers who did this. I grew up hearing about all the atrocities that Japanese soldiers committed in Asia during World War II and sometimes it seemed like they did the worst things imaginable to civilians just for the fun of it. They were not obeying orders or doing anything for their own survival in these cases. So I wonder if these soldiers develop PTSD from these actions specifically.