Battle of Rio San Gabriel
1847 CE.
Shown on the map at 33.992°, -118.111°.
The Battle of Río San Gabriel was fought on 8 January 1847 during the California campaign of the Mexican–American War. It took place at a ford of the San Gabriel River, at what are today parts of the cities of Whittier, Pico Rivera and Montebello, about ten miles south-east of downtown Los Angeles.
Text from the Wikipedia article Battle of Río San Gabriel, licensed CC BY-SA 4.0.