1917-1947 - Two 12-inch rifles. Langdon was first built as two open firing platforms. (see diagram right)
During WWII, Langdon's 12-inch rifles were roofed with 17-foot thick concrete casements. But amphibious and missile warfare made harbor defense guns obsolete.
Battery Langdon
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By kjfitz @ 2007-08-28 11:12:06