Let's say that you are the president or leader of a land. Your scientists have found a way to put soldiers in an unconscious state, and control their bodies in combat. They can have someone control the soldiers like a video game, commanding them to go through battles. After their service is up, which let's say is 4 years, they will wake up and have no memories of the years. This means that any horrors that might have happened in battle will not effect them, and it would be like taking a nap and gaining money for it. However, they would loose every memory of those 4 years of life, and have to put their lives in the hands of someone else.
Now they "could" be given a choice, but would you allow this program to happen?
Now they "could" be given a choice, but would you allow this program to happen?