Question: Which American Revolutionary War did  Bennington Battle Day  commemorate in America 
Sentence (from "Battle of Bennington"): The Battle of Bennington was a battle of the American Revolutionary War, part of the Saratoga campaign, that took place on August 16, 1777, in Walloomsac, New York, about 10 mi from its namesake Bennington, Vermont.
Relevant evidence: Yes