D'Auvergne, still a midshipman, was ordered to take charge of one of the boats carrying soldiers to attack Lexington. Paul Revere had already warned the Yankees of the attack, resulting in the British force of 800 being reduced by 73 dead and 185 injured by the pursuing American militia. D'Auvergne continued to command boats carrying troops around Boston and on 17 June 1775 after transporting troops, watched the ensuing Battle of Bunker Hill. He was on board one of the ships that bombarded and burnt Falmouth.