12/30 Today in Florida History from the Florida Historical Society! 1863 - Confederate soldiers attacked Union troops from the U.S.S. Rosalie who were encamped near the mouth of the Myakka River on this date. The Rosalie turned its guns on the Rebel forces and the Federal troops withdrew to the ship. Proceeding further up the river, the Rosalie encountered Confederate forces who fired at them from the riverbanks. Union gunboats were on the hunt for blockade runners and salt works.