Who was the commander of the British forces who ordered his troops to destroy the military stores at Concord in April of 1775?

On the 15 of April 1775, when General Thomas Gage, British Military Governor of Massachusetts, was ordered to destroy the rebel's military stores at Concord. To accomplish this he assembled the "Flanking units", including Light Infantry and Grenadiers, from his Boston Garrison. In charge he put Lieutenant Colonel Francis Smith and Marine Major John Pitcairn. He also composed a relief column under the command of Lord Hugh Percy to leave 6 hours after the main column. In an attempt at secrecy he did not tell his officers his plan until the last minute. The problem with his security measures were that Boston had become a glass fishbowl. All rebel eyes were watching to see the British' next action, and when the garrison committed to an action, the Americans knew their every move.