He went on intelligence-gathering missions in Vermont and Rhode Island and, as brigadier-general, led a failed attack on Newport, Rhode Island. After the war, he returned to his businesses. Heavy debt forced him to leave Germantown and he started a salt factory on the Boston Neck in 1784.
After engaging in intelligence missions in Vermont and Rhode Island, he served as a brigadier-general and led an unsuccessful attack on Newport, Rhode Island. Following the war, he resumed his business activities.  Heavy debt compelled him to relocate from Germantown and establish a salt factory on the Boston Neck in 1784.