I think the Manchuria Candidate is an exaggerated version where they turn people into drones. Everything ive Read on the subject (admittedly not a lot) is that type of hypnotic suggestion cannot be ingrained to have a subject do anything they normally would not.
Programming troops to hate the enemy is different, and has even done sine the beginning of time.
I would love to read examples that suggest different. (Not written with any sarcastic intent. I find this stuff interesting.)