Statistics for occurrence #1 of “Colonel Jackson” in chapter 2, page 28 of Col. J. J. Dickison, Confederate Military History, a library of Confederate States Military History: Volume 11.2, Florida:

...le after 2 o'clock a. m. To effectually accomplish the object of the expedition Colonel Chalmers was directed to advance rapidly along the north beach, Colonel Anderson along the south beach, and Colonel Jackson , following a few hundred yards in the rear of Colonel Chalmers, was to push his command to the middle of the island, and deploy it as soon as he should hear firing from either of the other battalions...
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