Statistics for occurrence #1 of “Fort Sumter” in chapter 7 of Benson J. Lossing, Pictorial Field Book of the Civil War. Volume 3.:

...ong moved forward to within half a mile of Fort Wagner, when he advanced his whole column at the double-quick, in the face of a shower of shot and shell, not only from the work in his front, but from Fort Sumter and Battery Gregg. Not many men had been hurt when the column had almost reached the ditch within short musket-range of the fort, and many believed that few of the garrison were left to oppose them...
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