the WSJ had a good review of it. David Cullough is a talented historian.
"1776, released today, is about the darkest year in American history. It is filled with military mistakes and the heroism of ragtag rebels. McCullough, always careful to stick to the past, draws no comparisons with the war in Iraq. But many readers will be prompted to think about our soldiers, then and now."
Plus the article title says the book is a "timely" history lesson.