Trenton's great historical feature is the Revolutionary battlefield, now completely built upon. Washington, having crossed the Delaware on Christmas night, in the early morning of December 26, 1776, marched down to Trenton, and surprised and defeated the Hessians under Rahl, who were encamped north of Assunpink Creek. A fine battle-monument stands in a small park adjoining Warren Street, at the point where Washington's army, coming into town from the north, first engaged the enemy. Here Alexander Hamilton, then Captain of the New York State Company of Artillery, opened fire from his battery on the Hessians, who fled through the town, along Warren, then called King Street. The monument is a fluted Roman-Doric column, rising one hundred and thirty-five feet, surmounted by a statue of Washington, representing him standing, field-glass in hand, surveying the flying Hessians, his right arm pointing down Warren Street. The elevated top of this monument gives a grand view over the surrounding country, the course of the Delaware being traced for miles. The subsequent fortnight's campaign ending in the battle of Princeton revived the drooping spirits of the Americans, and was said by as accomplished a soldier as Frederick the Great to be among "the most brilliant in the annals of military achievements." Trenton is at the head of tidewater on the Delaware, the stream coming down rapids, known as the "Falls." On the Pennsylvania side is Morrisville, called after Robert Morris, who lived there during the Revolution. His estate subsequently became the home of the famous French General Jean Victor Moreau, the victor at Hohenlinden, who was exiled by Napoleon in 1804. He returned to Europe afterwards at the invitation of the Czar Alexander, and devised for him a plan for invading France. They were both at the battle of Dresden in 1813, and were consulting about a certain manoeuvre when a cannon ball from Napoleon's Guard broke both Moreau's legs, and he died five days afterwards. PRINCETON BATTLE AND COLLEGE.