First Battle of Tucson
1779 CE.
Shown on the map at 32.224°, -110.973°.
The First Battle of Tucson was a confrontation at Tucson, Arizona on December 6, 1779, as part of the Apache-Mexico Wars. Captain Pedro Allande y Saabedra with a force of only fifteen men defeated an army of around 350 strong.
Text from the Wikipedia article First Battle of Tucson, licensed CC BY-SA 4.0.