Complex sentence: Unable to reverse the tide of the retreat, he threw his hat to the ground and shouted, "Good God, are these the men with which I am to defend America?" McCullough, "1776", 212.
Split into simpler sentences: Unable to reverse the tide of the retreat, he threw his hat to the ground and shouted, "Good God! Are these the men with which I am to defend America?" McCullough, "1776", 212.