Without digging, was this the expedition from Baton Rouge to the G&O Railroad late in the war? It was stopped in a battle near Leaksville, MS. I did some research on this expedition several years ago for a lady who had a diary of a Union trooper who was on this expedition. I never could figure out what their real target was because their direction didn't point to any special area of military value. I also was in contract with a person who lives on the battle site.

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David Upton