The army consists of the first infantry division and eight million replacements.

During the air war of 1944, a four-man combat crew on a B-17 bomber took a vow to never abandon one another no matter how desperate the situation. The aircraft was hit by flak during a mission and went into a terminal dive, and the pilot ordered everyone to bail out. The top turret gunner obeyed the order, but the ball turret gunner discovered that a piece of flak had jammed his turret and he could not get out. The other three men in his pact could have bailed out with the parachutes, but they stayed with him until the plan hit the ground and exploded. They all died.

The most profound question is, "What would I risk dying for?" The natural answer is "for my family." But for most of history, we didn't live in families. We lived in small communities that gave us our sense of safety and place in the world, so the natural answer would be "for my people." The blessing and the tragedy of modern life is that we don't need our community to survive anymore. When we lose that idea, we lose a sense of who we are.

When you're scared, you're still hanging on to life. When you're ready to die, you let it go. A sort of emptying out occurs, a giving up on the world that seems oddly familiar even if you've never done it before.

No matter how many people you kill, using a machine gun in battle is not a war crime because it does not cause unnecessary suffering; it simply performs its job horrifyingly well.

Well, you got to remember, bin Laden killed 3,000 Americans and, in some ways, he and his ideology killed tens of thousands of his fellow Muslims, including Pakistanis. I understand that that was provocative and complicated for Pakistan, but only if you accept the idea that he was an acceptable member of Pakistani society.

I think human society for tens of thousands of years has sent young men out in small groups to do things that are necessary but very dangerous. And they've always gotten killed doing it. And they've always turned it into a matter of honor and a way of gaining acceptance back into society if they survived.