The American army between world wars after World War I had virtually disintegrated. It was a very small force, given largely to practicing cavalry charges on western outposts.

The people who write official histories for the Army believe that a generation needs to pass before you can tackle the official history. It's useful to have some distance. Sources become available. Passions cool. It allows an opportunity to make some real assessments and judgments about personalities and characters.

I was with the 101st Airborne Division in Iraq, really in the middle of nowhere, about 80 miles south of Baghdad. And it was almost midnight, and I got a computer message from the home office of the Washington Post asking me to call them. I did call them and was told that I'd won the Pulitzer Prize.

I was born in Munich, and my father was stationed in Salzburg. For the first three years of my life, I lived in Austria back when the American Army was still in Austria. I grew up subsequently in posts around the country around veterans.

The spring of 1942 was given over to a very impassioned, strategic debate about where we should first attack in counterpunching against the Germans and Italians. The British argued very persuasively on the part of Winston Churchill, prime minister, that this was a very green American Army, green soldiers, green commanders.

Global war is a clash of systems, not just battalions biffing one another in some godforsaken forest.

Almost everything about American society is affected by World War II: our feelings about race; our feelings about gender and the empowerment of women, moving women into the workplace; our feelings about our role in the world. All of that comes in a very direct way out of World War II.