sentences:  He then studied law with Ralph Hascall in Essex, but returned in 1809 to New York City and continued his legal studies there with David B. Ogden.Ross was admitted to the bar in 1811, and practiced in Essex throughout his life.During the War of 1812, he enlisted as a second lieutenant in the 37th Infantry Regiment of the New York State Militia, and fought in the Battle of Plattsburgh.