Statistics for occurrence #1 of “Swamp Angel” in chapter 1.9 of Robert Underwood Johnson, Clarence Clough Buell, Battles and Leaders of the Civil War. Volume 4.:

...n the marsh should not be surprised, and on the 17th an 8-inch 200-pounder Parrott rifle gun was successfully transported over the marsh and mounted in the battery. It was immediately christened the Swamp Angel by the soldiers in the camp. On the morning of August 21st General Gillmore sent a communication to General Beauregard, who was in command of the Confederate troops in the military district of C...
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Swamp Angel 60 14 0 0 0 user votes

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