Statistics for occurrence #1 of “General McArthur” in chapter 45 of Admiral David D. Porter, The Naval History of the Civil War.:

...were acting on the Yazoo River in connection with Colonel Coates, were making themselves felt in that region. An expedition under Colonel Schofield was about to start up the Yazoo River by order of General McArthur , when, by request of the former, on April 21st, the gun-boats Petrel and Prairie Bird preceded the army-transport up to Yazoo City. No enemy being in sight, the Petrel went on up, leaving the Prair...
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