Hessians played a key role in the Revolutionary War. They served with distinction in many battles, particularly in the northern theater, most notably at White Plains and Fort Washington. The added manpower and skill of German troops is credited for greatly sustaining the British war effort, but it also outraged colonists and increased support for the Revolutionary cause. The use of "large armies of foreign mercenaries" was one of the 27 colonial grievances against King George III in the United States Declaration of Independence, while the Revolutionaries