McAlpin's Corps, also known as McAlpin's Corps of Royalists and the American Volunteers, referred to either of two loyalist units in the British Army, in British Canada, commanded by Major Daniel McAlpin, during the American Revolutionary War. In most instances, the name described the American Volunteers, a corps of American Loyalists, who served in the 1777 Burgoyne Expedition, of the Saratoga Campaign. The corps numbered some 184 men and officers and was engaged largely in the "batteau service" and defending supply lines, during the Saratoga Campaign. Following the Battle of Freeman's Farm, a portion of Daniel McAlpin's men were drafted into British regiments to help offset heavy casualties. Following the war the Loyal Rangers, including former American Volunteers, were settled in the South East of what is now the Province of Ontario, in Ernestown, Edwardsburgh, Augusta, and Elizabethtown townships.