Statistics for occurrence #1 of “Battery islands” in chapter 5 of Brigadier-General Ellison Capers, Confederate Military History, a library of Confederate States Military History: Volume 5, South Carolina:

... The Planter was stolen by her negro crew on the 13th of May, and two gunboats entered the Stono on the 20th following. The channel was open, the guns were all gone from the forts on Cole's and Battery islands , and the gunboats threw their 11-inch shells with perfect impunity on the right and left as they ran up the river. They anchored beyond Battery island, which would have effectually cut off the ret...
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