A combined force of Spanish, free blacks and allied Indians defeat a British garrison at the Siege of Fort Mose near St. Augustine during the War of Jenkins' Ear.

The Battle of Fort Mose (often called Bloody Mose, or Bloody Moosa at the time) was a significant action of the War of Jenkins' Ear, which took place on June 26, 1740. Captain Antonio Salgado commanded a Spanish column of 300 regular troops, backed by the free black militia and allied Seminole warriors consisting of Indian auxiliaries. They stormed Fort Mose, a strategically crucial position newly held by 170 British soldiers under Colonel John Palmer. This garrison had taken the fort as part of James Oglethorpe's offensive to capture St. Augustine. Taken by surprise, the British garrison was virtually annihilated. Colonel Palmer, three captains and three lieutenants were among the British troops killed in action. The battle destroyed the fort. The Spanish did not rebuild it until 1752.