Battle of Chino
1846 CE.
Shown on the map at 33.990°, -117.718°.
The Battle of Chino, a skirmish of the Mexican–American War occurred on September 26–27, 1846, during which 24 Americans led by Benjamin D. Wilson, who were hiding in the adobe house of Rancho Santa Ana del Chino, were captured by a group of about 50 Californios.
Text from the Wikipedia article Battle of Chino, licensed CC BY-SA 4.0.