We appeard before Dorchester the first after a most fatiguing[,] wet and disagreeable march. But notwithstanding we marched by bye ways and with as much secrecy as possible the enemy got intelligence of (p. 3) our approach and expected an attack at Dorchester the night before our arrival. Our horse charged such of the enemy as appeared out of their works on this side of the river. Twenty or thirty tories were killed[,] wounded or taken in the different skirmishes. After which the enemies whole horse came but were driven in with such fury as left them no doubt but that our whole force was at hand. They evacuated the post that night[,] burnt their stores and threw their Cannon in the Deep and the whole retird to the Quarter House where the british Army are very busy in compleating their fortifications and in cutting down the timber from thence to Charles Town.