Statistics for occurrence #1 of “Commander Porter” in chapter 20 of Admiral David D. Porter, The Naval History of the Civil War.:

...sel of your center division came up abreast of, or lapped their vessels. Practically, the effect of your verbal order was, to divide the fleet into four divisions, viz: 1st. The mortar fleet, Commander Porter . 2d. The first division of the gun-boats, under my command, to which was added the two sloops-of-war, Pensacola and Mississippi, of which the gun-boat Cayuga (with my division flag) was the lea...
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