DARPA has some really out there research projects. You can't get PTSD if you get your hippocampus zapped and can't transfer short term memories to long term storage. Memory wiping a squad once they get back inside the wire sounds like science fiction. But DARPA will pay for some mad scientists to try and do it. Meat drones may be a cheaper alternative.
http://www.defenseone.com/technology/2014/05/D1-Tucker-military-building-brain-chips-treat-ptsd/85360/?oref=d-river
http://www.neuroscientistnews.com/research-news/%E2%80%98free-choice%E2%80%99-primates-can-be-altered-through-brain-stimulation
http://www.defenseone.com/technology/2014/05/D1-Tucker-military-building-brain-chips-treat-ptsd/85360/?oref=d-river
http://www.neuroscientistnews.com/research-news/%E2%80%98free-choice%E2%80%99-primates-can-be-altered-through-brain-stimulation