John Drake Sloat's Forces Raise An American Flag In Yerba Buena

Commodore John Drake Sloat, upon hearing of imminent war and the revolt in Sonoma, ordered his naval and marine forces to occupy Yerba Buena (present-day San Francisco) on July 7 and raise the flag of the United States; this was accomplished on July 9. On July 15, Sloat transferred his command to Commodore Robert F. Stockton, a much more aggressive leader, who put Frémont's forces under his orders. On July 19, Frémont's "California Battalion" swelled to about 160 additional men from newly-arrived settlers near Sacramento, and he entered Monterey in a joint operation with some of Stockton's sailors and marines. The word had been received: war was official. The U.S. forces easily took over the north of California; within days they controlled San Francisco, Sonoma, and the privately owned Sutter's Fort in Sacramento.

Yerba Buena was the name of a town in the Mexican territory of Alta California that became the city of San Francisco, California, after it was claimed by the United States.

The name of the town was taken from the plant with the same name that grew around the settlement that was adjacent to the Mission San Francisco de Asís (or "Mission Dolores"). The plant's common name, Yerba buena, the same in English and Spanish, is an alternate form of the Spanish hierba buena (meaning "good herb"). The herb was given its name by the pioneer Catholic priests of Alta California as they settled an area where the plant is native.