Fort McIntosh was established on 3 March 1849 by the 1st US Infantry, under the command of Lt. E.L. Viele,[2] to guard the Texas frontier at the site of a strategic river crossing.The Battle of Laredo took place near the fort on March 19, 1864, when 72 men repelled three attacks from a force of 200 federal soldiers sent from Brownsville, Texas.In the late 19th century, several African-American units among them the 10th Cavalry, the "Buffalo Soldiers", were stationed at Fort McIntosh.During World War II, the 8th Service Command, the 56th Cavalry Brigade, the Southern Land Frontier, the Civil Air Patrol, and battalion of military police all were stationed at the facility at one time or another.[5] The Laredo United States Army Reserve 340th Quarter Master Company is located within the fort.