In April 1781, Maj. General Thomas Gage returned to duty with an appointment to General Jeffrey Amherst's staff with the mission to organize militia in prepration for possible attack from France. In April, 1782, he was appointed colonel of the 17th light dragoons. On November 20, 1782, he was promoted to full General. In 1785, he was transferred to the 11th dragoons. His health had begun to decline and after a long illness, he died in Portland, England on April 2, 1787. His wife would survive him by nearly thirty-seven years.