June 1777, the regiment reached about 700 members, out of an authorized strength of 1,000. The cultural differences between the original Quebec enlistees and the new recruits from the Thirteen Colonies was a regular source of friction within the regiment, and Hazen consequently kept the French-speakers in companies separated from the English-speakers. Hazen also submitted to Congress a claim for damages to his estate in Quebec. The original bill was for $11,363; Congress paid $2,595 in October 1776. Philadelphia campaign In May 1777, Hazen's regiment was ordered to join the main army at Princeton, where it was active in the Philadelphia campaign as part of John Sullivan's brigade. Some of Hazen's companies (but not Hazen himself) participated in the Battle of Staten Island; in this action, Antill was captured. Hazen's command during the Battle of Brandywine included the northern (right) end of the American line; this position was one of those flanked by the British in their attack. Hazen made an early report indicating the presence of British troops on the American flank that turned out to be the main British thrust. His report was dismissed by General Sullivan, who wrote, after receiving other reports, that "Colo. Hazen's Information must be wrong." To Sullivan's detriment, the other reports were wrong, and Hazen's was correct; the British flanking maneuver was instrumental in the American loss of the battle. Hazen's regiment lost 4 officers and 73 men in the battle. In the Battle of Germantown, Hazen commanded a brigade that included in addition to his own regiment, the 2nd, 4th, and 6th Maryland Regiments. They formed part of Sullivan's column when it marched on the town; his regiment lost 3 officers and 19 men in the engagement. Bayley-Hazen Road proposed Hazen, ever since his return to the United States in 1776, had maintained a constant stream of communications with Congress, primarily on the subject of Canada. In January 1778, these communications bore some fruit, when, with French assistance, planning for an invasion of Canada began. Hazen was assigned the job of deputy quartermaster for this operation. However, the planning was hampered by supply and staffing difficulties, and never got off the ground. It was ultimately cancelled by Congress in March 1778. This failure did not deter Hazen from offering a new route for invading Canada. This route went from Newbury, where Hazen owned land and knew the area, to Saint Francis, Quebec.