The Confederates seized control of Fort Marion (Castillo de San Marcos) without a shot being fired on January 7, 1861. Paul Arnau, the customhouse officer in St. Augustine, formed a group called the “Coast Guard” who set out to remove the lights from the coastal lighthouses. They started with the St. Augustine Lighthouse removing the lenses and hiding them. The “Coast Guard” did the same at Cape Canaveral. At Jupiter Inlet when the keeper refused to remove the lenses he was escorted off the property at gunpoint and they dismantled the light and hid the lenses. Arnau on his return became the mayor of St. Augustine.

The blockade resulted in a rise in food prices and the tourist trade quickly disappeared. In February of 1862 Robert E. Lee made the decision to no longer defend ports in Florida. On February 28, 1862, twenty six Navy vessels left Hilton Head, SC, to reoccupy Fernandina, Jacksonville and St. Augustine. Rather than surrender the town Paul Arnau resigned as mayor. Union Commander C.R.P. Rogers accepted the city’s surrender on March 11 at the Government House. The 4th NH, under Colonel Louis Bell, arrived to garrison St. Augustine. Former mayor Arnau was imprisoned on the USS Isaac Smith until he revealed where the lighthouse lenses were hidden.
In order to draw food supplies from the Federal commissary citizens were required to take the oath of allegiance. In September of 1862 the 7th NH arrived. All white males above the age of 14 and families with men in Confederate service were required to take the oath or face removal. Several hundred were removed. Confederate Captain J.J. Dickison’s men roamed the woods west of the city making Union excursions outside town dangerous. In the spring of 1863 the NH troops were replaced by the 7th CT under Colonel Joseph R. Hawley. By this time only 700 whites and 300 blacks remained in the city. The 48th NY arrived in August but stayed only a couple months before the 24th MA and 10th CT were assigned to St. Augustine in the fall. The town’s population had fallen to 400. Dickison was more active in the area and ambushed a Union wood-cutting party in December. In April of 1864, before the November election, the 17th CT who were strongly pro Lincoln were ordered to garrison the town. After the war the city would recover slowly with its population in 1870 still lower than 1830.











General Martin Davis Hardin- Civil War Union Brigadier General. At the start of the Civil War, he was a Lieutenant Colonel in the Pennsylvania Reserves and was promoted Colonel in command of the 12th Pennsylvania Regiment in July 1862. He led the 12th Pennsylvania in actions from the Peninsula to Falmouth and was wounded at Antietam. At the Battle of Gettysburg, July 1863, he commanded his regiment and an artillery battery at Little Round Top. For his service at Gettysburg, he was promoted Brigadier General in October 1863, in command of Fort De Russy. His last service action was as a commander of the 1st Brigade, 3rd Division of the V Corps at the Battle of Cold Harbor, Louisiana, in June 1864 (from findagrave.com).

















































From staugustinelighthouse.org (link)- Authorities darkened the tower during the Civil War in an effort to hinder the Union Navy off Florida’s coast. As the city’s Collector of Customs, Paul Arnau, oversaw the removal of the lighthouse Fresnel lens in January 1861, per Confederate orders. Serving as mayor of St. Augustine from November 1861 to March 1862, Arnau resigned rather than surrender the city to Union forces. Northern troops arrested Arnau and sequestered him on the Union gunboat Isaac Smith until he revealed the location of the lighting mechanisms for the St. Augustine light and other lighthouses in the area including Cape Canaveral.


The two Confederate Memorials below were moved to the Trout Creek Memorial Park, about 19 miles west of the center of town, in 2020.




Sources
St. Augustine and the Civil War by Robert Reed
Civil War Times in St. Augustine edited by Jacqueline K. Fretwell
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