 Complete the following phrase:  In March and April 1864, Shelbys men harassed and skirmished with the Union Army force under the command of Major General Frederick Steele during his Camden Expedition, part of the Red River Campaign. Gordon led more than one charge against the Union forces during Steeles march from Little Rock to Camden, Arkansas. On April 25, 1864, Gordon led his regiment at the Battle of Marks Mills where they captured two Union artillery pieces from the detachment of Union Lieutet Colonel Francis M. Drake when Shelbys force attacked the Union left wing of the detachment which had been sent from Camden toward Pine Bluff, Arkansas to obtained supplies for Steeles force which was increasingly besieged by gathering Confederate forces at Camden. The Confederates outnumbered the Union force at Marks Mills by more than 2 to 1 and overwhelmed it, taking about 1,300 prisoners and about 240 wagons. The overall commander of the Confederate cavalry force at Marks Mills, Brigadier General James Fagan, led the Confederates, including Shelbys command, toward Pine Bluff in an effort to capture the Union supply depot. The Confederates did not make it to Pine Bluff due to flooding. They also did not return fast enough to cut off Steeles return march to Little Rock or to participate in the 