Fort McRee, was a historic military fort constructed by the United States on the eastern tip of Perdido Key, to defend Pensacola and its important natural harbor. In the defense of Pensacola Bay, Fort McRee was accompanied by Fort Pickens, located across Pensacola Pass on Santa Rosa Island, and Fort Barrancas, located across Pensacola Bay on the grounds of what is now Naval Air Station (NAS) Pensacola. Fort Pickens was the largest of these. Very little remains of Fort McRee today.
Fort McRee was one of three major installations constructed by the United States to strengthen defenses at Pensacola Bay following the War of 1812. Its construction lasted from 1834 and 1839; the facility was a three-tiered fort and a detached water battery close to sea level. It was located on the eastern tip of Perdido Key on a stretch of beach known as Foster's Bank. It had a highly unusual shape because of its position on a small, narrow barrier island.
Although the fort was completed in 1839, its 122 guns were not installed until sometime between 1843 and 1845. It is likely that many of these guns were not in place for some time due to several issues, the most important of which was a problem with rot beginning in the second tier wooden decking.
Fort McRee was named in April 1840 for Army engineer Colonel William McRee.
The first troops stationed at Fort McRee, the men of I Company, 3rd Artillery, arrived on 2 May 1842. These men were joined by E Company, 7th Infantry in July. From this time until October 1845, when much of the artillery unit was ordered to Louisiana, the fort was manned at various levels.
After the Mexican-American War was finished in 1848, barracks were built near Fort Barrancas on the mainland. Once these were completed, Fort McRee was manned only during drills, maneuvers and target practice. The strength of the entire US Army on 1 December 1853 was reported at 10,417, so commanders had to be effective in use of troops. The other two Pensacola area forts were manned in a similar way until the outbreak of the Civil War.