 Henry then appointed him acting lieutenant on 24 October 1778.Crawford took part in several important battles during the remainder of the war, commanding a battery of "Fowey"s guns that had been landed to defend Savannah during its siege.The besieging forces were eventually repulsed and for his good service there, Crawford was mentioned in the despatches written by Captain Henry, and the commander of the land forces, General Augustine Prévost.