There is also an historical marker located on the east side of U.S. Highway 1 in the town of Callahan in Nassau County that reads:
June 30, 1778, a force of 300 American Cavalry commanded by Colonel Elijah Clarke, participating in General Robert Howe's invasion of Florida, attacked a column of British at this place (Alligator Creek Bridge), but were unable to penetrate the nearby entrenchments of 450 British Regulars and South Carolina Royalists under the command of Major James Marc Prevost. In this skirmish, Colonel Clarke was wounded and the Americans withdrew. The next day, the British retired in the direction of the St. Johns River.
Casualties: Americans 13 British 9
Erected by Jacksonville Chapter, Florida Society Sons of the American Revolution