Statistics for occurrence #1 of “Whale Branch” in chapter 9 of Admiral David D. Porter, The Naval History of the Civil War.:
The attention of Admiral Dupont had, in January, been drawn to the fact that the enemy designed to shut up the troops on Port Royal Island, by placing obstructions in the Coosaw River and Whale Branch , by erecting batteries at Port Royal Ferry, at Seabrook, and at or near Boyd's Neck, and by accumulating troops in the vicinity in such a manner as to be able to throw a force of three thousand men u...
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