While Mauldin wound up being a total liberal with his post-war domestic cartoons, he did have a poignant way of capturing the war from the eyes of the GI. He was sort of an Ernie Pyle of cartoonists. And they seem a bit a bit bawdy by the standards of the day, although I'm sure it was far milder than what the GIs actually talked about.
My favorite Mauldin was from last summer, as the Americans liberated France:
"This is the town my pappy told me about."