sentences:  In May 1778, he rejoined Hazen's regiment with his father-in-law, Germain Dionne, and his older brother, Louis Gosselin.On November 28, 1778, Gosselin, following a spy mission to Quebec, sent a report on the state of the British force in Canada to Washington.In April 1779, he went with Moses Hazen to build a proposed invasion route from the "Coos Country" of northern New Hampshire (then part of the disputed New Hampshire Grants, which eventually became the state of Vermont) into Canada.