I suppose this is why the army takes young males into service. They are full of testosterone and patriotism, which makes them easy to mold into homicidal lunatics. They are more likely to obey orders without question, no matter what the orders are. Older folks, with the benefit of life experience, are much more difficult to manipulate. They have seen enough of the political bullshit that fuels wars, and are more apt to look upon the whole process with a jaundiced eye. When given a command, they are much more likely to ask why. In short, they have learned to be more rational.