Johnson's Regiment of Militia was called up a second time during this campaign by the British high command for North America that ended with the surrender of which army?
Johnson's Regiment of Militia:  The regiment was called up a second time at Andover, Massachusetts on August 14, 1777 as reinforcements for the Continental Army during the Saratoga campaign. Saratoga campaign: The Saratoga Campaign in 1777 was an attempt by the British high command for North America to gain military control of the strategically important Hudson River valley during the American Revolutionary War. Saratoga campaign:  It ended in the surrender of the British army, which historian Edmund Morgan argues, "was a great turning point of the war, because it won for Americans the foreign assistance which was the last element needed for victory."
British army