On May 6, Hooker recrossed the Rappahannock. He lost a total of 17,278 casualties while Lee lost 12,826. It was a tremendous win for Lee. But Lee could not replace Jackson. Hooker was the second general of the Army of the Potomac to be replaced after a single battle. Hooker argued that the cavalry raid failed to cut Lee's supply lines. He complained that the XI Corps, composed mostly of German-Americans and other recent immigrants, ran instead of staying to fight. Oliver O. Howard's XI corps were labeled the "flying Dutchmen" over this incident. But they redeemed themselves at the Battle of Missionary Ridge. Howard would later be promoted over Hooker. But despite laying the blame elsewhere Hooker was replaced by General George G. Meade. In a few weeks, Lee would move north to engage the Union forces again at the Battle of Gettysburg.