 Cornwallis and the remaining British and Hessian troops in and around Trenton and Princeton withdrew to New Brunswick to regroup after the battle at Princeton.On January 13, a significant portion of the British army advanced from New Brunswick west to Somerset Court House (present-day Millstone, New Jersey), and remained there for about a week before retreating back to New Brunswick, destroying houses and plundering supplies.During this time, militia companies mustered to assist the Continental Army.