Wouldn't it be nice if all combatants returned to their home countries and allow this dispute to be settled in the International Court in the Hague
US did not abide to the Geneva Convention, as US labeled them as combatants because they did not wear official Uniforms.
But, the value and philosophy of Geneva Convention actually deals with proper treatment of captured prisoners as humans and people, regardless of what.
However, US did torture a lot of them and some of them had died, while quite so many are unknown with no names. Because of the time length they have been held with no charges, they should return to where they came from, and few did return. However, it was bad.