Fort Barrancas mostly by enslaved African-American workers. January 8, 1861, more than three months before the American Civil War officially started at Fort Sumter, South Carolina, a company of 50 U.S. Army soldiers stationed at Fort Barrancas, under the command of John H. Winder fired upon a militia. This militia was Florida state troops under Colonel William Henry Chase demanding that the U.S. troops surrender the fort. Lieutenant Adam J. Slemmer, acting commander in Winder's absence, had the troops fire shots meant to repel the militia. Lt Slemmer knew that Fort Pickens was easier to defend, so he spiked the guns at
Fort Sumter casualties were 8 killed, 19 wounded, and 105 captured (including 15 of the wounded). The Confederates did not suffer any casualties in the assault. After the unsuccessful boat assault, the bombardment recommenced and proceeded with the varying degree of intensity, doing more damage to Fort Sumter until the end of the war. The garrison continued to suffer casualties. The Confederates continued to salvage guns and other material from the ruins and harassed the Union batteries on Morris Island with sharpshooters. The Confederates mounted four columbiads, one columbiad rifled, and two rifled 42-pounders, in the left face, bottom tier casemates. The