
California State Military
Department
BATTERY MENDELL - First of the batteries to be built in Fort Barry, it was commenced in July 1901 and mounted two 12-inch breech-loading rifles, Model 1895, on Buffington-Crozier "disappearing" carriages Model 1897. Colonel George Mendell, the engineer officer who had supervised construction of post-Civil War and early Endicott-type batteries around San Francisco Bay, had died in San Francisco in 1902, and on November 22, 1902, the new Marin County battery was named for him.
BATTERY ALEXANDER - Commenced in October 1901, this eight-mortar battery, smallest mortar battery in the defenses of San Francisco, was armed with breech-loading 12-inch mortars, all Model 1890 mounted on model 1896 Mark I carriages. The battery was named on November 22, 1902 in honor of Colonel Barton S. Alexander of the Corps of Engineers, an associate of Colonel Mendell's and the senior engineer on the Pacific Coast, who had died in 1878.
BATTERY EDWIN GUTHRIE - This battery of four six-inch rapid-fire guns, Model 1900, mounted on barbette carriages, Model 1900. The emplacement was named on December 27, 1904 in honor of Captain Edwin Guthrie, 15th Infantry, who died in the Mexican War in 1847.
BATTERY SAMUEL RATHBONE - The second six inch barbette battery, this one contained Model 1900 weapons, on Model 1900 barbette carriages. The battery was named on December 27, 1904 in honor of a lieutenant of artillery killed in action in Canada in the War of 1812.
BATTERY PATRICK O'RORKE - It was built to mount four 15-pounder, 3 inch guns on Model 1903 pedestal mounts. It was not armed until 1909. The battery was nevertheless named on December 27, 1904 in honor of Colonel Patrick Henry O'Rorke, killed at Gettysburg during the Civil War in July 1863.

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