[German mercenaries in the British army] were encamped.
"The spy was denied an audience with the commander and instead wrote his message on a piece of paper. A porter took the note to the Hessian colonel, but because Rall was involved in a poker game he stuffed the unread note into his pocket. When the guards at the Hessian camp began firing their muskets in a futile attempt to stop Washington's army, Rall was still playing cards.
"Without time to organize, the Hessian army was captured. The battle occurred the day after Christmas, 1776, giving the colonists a late present -- their first major victory of the war."