Statistics for occurrence #1 of “Rear-Admiral Dupont” in chapter 6 of Daniel Ammen, Confederate Military History, a library of Confederate States Military History: Volume 7.2, The Atlantic Coast:

... Rear-Admiral Dupont
On April 2, 1863, the Rear-Admiral left Port Royal to join the ironclads, as the monitors were styled, at North Edisto, and...
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