There is some info on how people have been hypnotized and used when they were religious objectors to fighting in war times and if many years later this person started getting flash backs of the wicked things they were forced to do against their will, it seems some how it can be discovered and has been suggested those people are just found dead for no known reason, my wife's dad was in such a situation, same hospitals, same places and time periods and was discovered dead for no reason. Now even many, many years later pictures and stories of such religious peoples being experimented upon and being killed while under drugs or hyptnosis are coming to the surface. The truths try to surface eventually.
I have talked to X-Navy Seals and it does appear like the governments keep track on these guys long after they return to civilian life and if they ever start telling tails who knows where they would dissapear to!!! I know an old guy that was showed many things in the army in 1950 and still today he refuses to tell what he knows, I have an Uncle that was in the CIA durring the 50's that still won't talk other that you don't want to know!!!