Volume Four of the ""Revolutionary War Series"" completes the documentary record of Washington's first year as commander in chief of the Continental army. It opens with this final preparations to leave Cambridge following the successful siege of Boston and concludes with news that General William Howe's British army was soon to arrive at New York, an event which would mark the beginning of the New York campaign. In the interim between campaigns, Washington established his headquarters as New York and began wrestling with the perplexing problems of defending the strategically important corridor between New York and Canada formed by the Hudson River and Lake Champlain. In addition to Washington's activities as commander in chief of the Continental army, the volume includes documents and notes concerning the medal that Congress awarded him for the liberation of Boston, Washington's efforts to terminate his long and successful administration of the Custis estate, and details of his travels from Cambridge to New York and between New York and Philadelphia. As in earlier volumes of the ""Revolutionary War Series"", Washington's writings show him to be unwavering in his advocacy of American independence and in his commitment to the subordination of the military to civil authority.