Important to remember what is set as fair game can easily be turned up by other World governments in non ideal ways at potentially non null times in the future. Geneva Convention is Important, Worth Investing In.
https://en.wikipedia.org/wiki/Geneva_Conventions
Experiences like Waterboarding as a public affair have potential for less than ideal long term amplification. Fear and falling inline might have potential to amp less ideally in more oppressive situations.
Medieval Torcher like systems are a possible system that has not been updated to full potential seems to be less than an ideal. Value matters, with more protection for all parties involved seems more ideal from my limited perspective.
Potential for prize prisoners as trading cards.
Brain scans that could read all thoughts might be useful. Potential for misused.
Oppression can take many forms, removed upfront has potential for a lot of value added.
Life is a temporary system thus I find Christianity to be High Value Added, Heaven will be amazing
It is what they do can be less than an ideal system
Peace Corps is Important, worth investing in