Dos Passos went from being a near-communist in the 1930's to being a true prominent conservative in the 1950's. You can see in this article that by 1946 he had discarded all idea of the Red Army being the savior of the world. While he probably makes too much of US troops looting, the truth is that the greatest generation did have its share of thieves. By historical standards, the discipline of US (and British) troops in Iraq is an extraordinary achievement of which this country should be proud.