History of North America

How did the ridge and earthen works at Bennis Heights near Saratoga affect outcome of battle?

The Battle of Bennington took place in August 1777 during the American Revolutionary War. While there were earthen works erected along the Walloomsac River and at Walloomsac Heights there wasn't the same fortifications at Bennits Heights (Hoosick, N.Y) as it occurred 44 miles to the southwest.