@SotiCoto: Soldier mentality. "Yes, we're going to die, but we die as heroes because we trade our lives to save the world. Let's show them what we're about!" Is the shorthand of that speech. Believe it or not, a lot of soldiers don't mind dying if their death will be an honorable. And to sacrifice our lives to save innocent ones is totally worth it.
Yeah, Galford is a grade A1 prick, but if he did this speech before a big battle against Al Qaeda, it would also have raised morale.