On April 17, 1783, Fort Carlos III was the site of the only American Revolutionary battle fought in Arkansas, which actually happened several months after the war ended (Arkansas). James Colbert led a group of English trappers and Chickasaw Indians in an attack on Fort Carlos. Colbert and his men attacked the Spanish fort because the Spanish had secretly provided supplies to the Americans during the American Revolution and in 1779 had entered the war, siding with the French and Americans. With the help of the Quapaw, the Spanish were able to drive the men in Colbert’s group back and away from the fort.