This is how the Marine Corps makes the best combat soldiers in the world out of puerile teenaged boys. It may not look like it, but these boys are killers. When they are unleashed upon the enemies of the United States, they are relentless. They will carry out their orders NO MATTER WHAT. It may seem to some people that the training to which they submit is cruel and heartless. This is not the case. These boys will be sent to places of unimaginable danger. The harsher their training, the better their chances of survival, and the better their chances of successfully carrying out their mission. They are taught from T-1, "The mission comes first. Before me, before you, before your family, before everything. DO. NOT. FAIL."
They put everything on the line to defend our country. We must respect that, and we should be very, very reluctant to commit them to combat unless it is absolutely necessary.
http://www.youtube.com/watch?v=EZZVnYGj5hY
http://www.youtube.com/watch?v=UdUZgDyRi7A
http://www.youtube.com/watch?v=nN7emM1Gf8w
http://www.youtube.com/watch?v=O03g9WheYpc