I assume it is different for separate countries and has evolved over time but when an enemy surrenders what did the American soldiers do with the German soldiers that surrendered to them at the beaches of Normandy? Do they just drop their mission to tie them up or bring them back? Do they call it in and a big POW bus comes to pick them up?
Do you have a specific country or conflict in mind? Seeing as this is quite a broad question, you should try and be a bit specific.