How did the colonists win the battle of Trenton?

The Battle of Trenton occured during the revolutionary war on December 25, 1777. Washinton and his army were camping accross the river and ten miles up from Trenton where the hessians( German soldiers that worked for the british) where living. The hessians were all drunk from their Christmas party that they slept late so Washington and his army attack them in there sleep but soon came outrside to finish the battle. The general for the hessians, Colonel Rall, got shot and killed so the hessians surrendered. Therefore the colonials one the battle with not one of their men killed or injured. You should see the movie the crossing if yolu want to know more about it.