Statistics for occurrence #1 of “Fort Pickens” in chapter 1 of Col. J. J. Dickison, Confederate Military History, a library of Confederate States Military History: Volume 11.2, Florida:
... to prevent a great Federal depot being established at this point, from which none of the gulf ports would have been free from annoyance or danger, especially Mobile and New Orleans.
If confined to Fort Pickens the Federals could not concentrate any considerable body of troops there, and even though the other forts and the navy yard might be commanded by it, still they could not venture to occupy them while...
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