In the meantime, on the Union right, Lew Wallace formed an attacking column with three brigades—one from his own division, one from McClernand's, and one from Smith's—to try to regain control of ground lost in the battle that morning. Wallace's old brigade of Zouaves (11th Indiana and 8th Missouri), now commanded by Col. Morgan L. Smith, and others from McClernand's and Wallace's divisions were chosen to lead the attack. The brigades of Cruft (Wallace's Division) and Leonard F. Ross (McClernand's Division) were placed in support on the flanks. Wallace ordered the attack forward. Smith, the 8th Missouri, and the 11th Indiana advanced a short distance up the hill using Zouave tactics, where the men repeatedly rushed and then fell to the ground in a prone position. By 5:30 p.m. Wallace's troops had succeeded in retaking the ground lost that morning, and by nightfall, the Confederate troops had been driven back to their original positions. Grant began plans to resume his assault in the morning, although neglecting to close the escape route that Pillow had opened.