At what point did farnsworth did finally retreat the enemy troops?

The Battle of Bunker Hill, occasionally being called the Battle of Breed's Hill, was an event that

It took place on June 17, 1775, during the early stages of the American Revolutionary War.

The battle is named because of the adjacent Bunker Hill (Bunker Hill), which was peripherally involved in the battle and was the primary goal of both Colonial and British troops. It was during this battle that British Major John Pitcairn was assassinated by Connor.

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