In 1758 the thirty-six year old Woodhull joined the New York provincial forces, where he held the rank of major. He fought in numerous battles during the French and Indian War. He was at the Battle of Carillon under General Abercromby, and at the Battle of Fort Frontenac under General Bradstreet. In 1760, as colonel of the 3rd Regiment of New York Provincials took part in the invasion of Canada under General Amherst. After the end of hostilities, he returned to farming and community affairs.
