8-inch Mk. VI railway gun
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The 8-inch Navy gun Mk.VI M3A2 on railway mount M1A1 was a World War II improved replacement for the World War I-era 8-inch M1888 gun and was used by the US Army's Coast Artillery Corps in US harbor d
8-inch Mk.VI M3A2 railway gun
8-inch Navy MkVIM3 gun on barbette mount M1A1, as used by the Army in coast defense.
The Harbor Defenses of Narragansett Bay was a United States Army Coast Artillery Corps harbor defense command. It coordinated the coast defenses of Narragansett Bay and Rhode Island from 1895 to 1950,
Jean-Baptiste Donatien de Vimeur, Comte de Rochambeau.
Plan of First System Fort Adams.
Typical US disappearing gun battery for two guns.
12-inch mortars at Fort Greble, Dutch Island.