Book excerpt: The scene was set for Washington's and Rochambeau's rapid move south, setting up the daring siege of Yorktown." "Drawing on primary research, including diaries and personal letters, acclaimed historian of the American Revolution Richard Ketchum offers an account of the strategies and personalities behind the victory that surprised the world. Yorktown was that rarest of military and naval operations in which everything fell into place at exactly the right moment. It was a race against time and distance, by land and at sea. After almost seven harrowing years and against all odds, Washington - with French help - defeated the world's finest army. The war was won."--BOOK JACKET.