Of all the military posts established by Spain in West Florida after the Revolutionary War, San Marcos de Apalache was the only one ever to come under enemy fire. When Spain signed the treaty of San Ildefonso on August 19, 1796, and joined France in the war against Britain, military posts on the Mississippi were prepared for possible attack from Canada. There were many alarms, but all proved false. Along the Gulf coast no Spanish post was besieged by the enemy until war was brought to San Marcos by William Augustus Bowles, a British half-pay officer, and his Indian supporters.
"War Comes to San Marcos,"
Florida Historical Quarterly: Vol. 62
, Article 4.
Available at: https://stars.library.ucf.edu/fhq/vol62/iss1/4