Fort Rector
(1862), near St. Claire
A CSA fort located on the Mississippi River, site probably on present-day Redman Point Bar, northeast of Mound City, opposite Fort Harris in Tennessee. No remains. Abandoned before Memphis fell to the Union in June 1862.
http://www.northamericanforts.com/West/ar.html#rector

In early 1862 Fort Donelson was the first to come under fire and fell into the Union's control. Fort Pillow held the Union ships at bay for a while, but the fort was abandoned and the Confederates fled south. They abandoned Fort Randolph without a fight as well and made their way to Memphis.
Fort Harris and Fort Rector (on the Arkansas side opposite Ft Harris) had been abandoned much earlier and played no part in the defense of the city.
http://2lostsoulsotheroad.blogspot.com/2010/10/on-road-again-101-32010.html

Fort Reactor 10/12 miles north of Memphis on the right bank of the Mississippi River
http://www.libraryweb.org/~digitized/newspapers/moores_rural_new_yorker/vol.XII,no.25.pdf