In March 1779 the regiment was reassigned to the Northern Department, and marched to Springfield, Massachusetts. From Springfield they marched to Charlestown, New Hampshire and picked up clothing and supplies. They arrived in what was called the Coös Country of northern New Hampshire in May, and were tasked to build a road now known as the Bayley-Hazen Military Road from the Connecticut River to St. Jean, Quebec. Hazen had been secretly ordered to the area by Washington in April. Along with a large portion of Colonel Timothy Bedel's Regiment and Major Benjamin Whitcomb's New Hampshire rangers, they began to extend the road, a portion of which had been constructed in 1776 under the direction of Colonel Jacob Bayley.