After July 1776, the party ended quickly for George Washington

After the high of the Declaration of Independence, wartime reality set in for the founders.Michael O’Hanlon is a defense and strategy analyst at the Brookings Institution and the author of “To Dare Mighty Things: U.S. Defense Strategy Since the Revolution.”Despite the heady moment in Philadelphia with the Declaration of Independence’s approval in early July, 1776, that summer was a tough one for the nation’s founders, George Washington in particular. The rest of that year — until Washington crossed the Delaware River and won the Battle of Trenton on Dec. 26 — would go down as the worst period of the...