Because American troops were already concentrated at Buffalo and Black Rock, the attack was to be launched across the southern part of the Niagara frontier. Fort Erie was the first objective that stood in the way, which required its capture. Lieutenant General Gordon Drummond, the British commander in Upper Canada, hoped that the garrison at Fort Erie could at least buy him enough time against the American invasion to concentrate his forces. Major Thomas Buck was given command of the fort with a garrison of 137 British soldiers.