General David Petraeus in a Washington Post interview on role models and leadership:
I took enormous strength from reading about Grant and what he went through. He was a truly admirable figure. The response he had after the first day in Shiloh was one that I often repeated to our troopers during the tough moments.
As you'll recall, the Union forces were almost driven into the river in the first day at Shiloh; terrible casualties. It's the night of the first day, it's raining, he's got his slouch hat on. Rain is literally running off it, got a wet cigar on his mouth, the cries of the wounded all around him. There's no shelter because the wounded are inside anything that has a roof on it, so he's sitting in this chair under a tree and it's dark. And out from the darkness stomps Sherman, his most trusted, I think, subordinate leader during those war years. And Sherman says to him, "Well, Grant, we had the Devil's own day today, didn't we?" And Grant says, "Yup. Lick 'em tomorrow though."