Statistics for occurrence #1 of “Fort Sumter” in chapter 1.1 of Robert Underwood Johnson, Clarence Clough Buell, Battles and Leaders of the Civil War. Volume 4.:

... attacked Fort McAllister with an iron-clad, three gun-boats, and a mortar-boat, and also, on the 3d of March, with three monitors. He was evidently trying his hand before his final venture against Fort Sumter . But the result must sorely have disappointed him; for notwithstanding the vigor of these two engagements — the first lasting more than two hours, the second at least seven--the Confederate b...
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