In the Spring of 1864, the Churchill's Division, with Tappan's Brigade moved south to oppose Union General Nathaniel Banks' Red River Campaign in north-central Louisiana in March and early April 1864. The division arrived during the Battle of Mansfield on April 8, 1864, but was not committed to the battle and occupied a position on the flank of General Taylor's division. Brigadier General Churchill was placed in command of both his own division and Brigadier General Parson's Division during the pursuit of the enemy from Mansfield to Pleasant Hill, Louisiana so Brigadier General Tappan assumed command of Churchill's Division. While Tappan commanded the Division, Colonel Grinstead of the 33rd Arkansas assumed command of Tappan's Brigade and led it through the fight at Pleasant Hill, on April 9, 1864. General Tappan described the action at Pleasant Hill as follows: