Lee reorganized his cavalry on September 9, creating a Cavalry Corps for Stuart with two divisions of three brigades each. In the Bristoe Campaign, Stuart was assigned to lead a broad turning movement in an attempt to get into the enemy's rear, but General Meade skillfully withdrew his army without leaving Stuart any opportunities to take advantage of. On October 13, Stuart blundered into the rear guard of the Union III Corps near Warrenton, resulting in the First Battle of Auburn. Ewell's corps was sent to rescue him, but Stuart hid his troopers in a wooded ravine until the unsuspecting III Corps moved on, and the assistance was not necessary. As Meade withdrew towards Manassas Junction, brigades from the Union II Corps fought a rearguard action against Stuart's cavalry and the infantry of Brig. Gen. Harry Hays's division near Auburn on October 14. Stuart's cavalry boldly bluffed Warren's infantry and escaped disaster. After the Confederate repulse at Bristoe Station and an aborted advance on Centreville, Stuart's cavalry shielded the withdrawal of Lee's army from the vicinity of Manassas Junction. Judson Kilpatrick's Union cavalry pursued Stuart's cavalry along the Warrenton Turnpike, but were lured into an ambush near Chestnut Hill and routed. The Federal troopers were scattered and chased five miles (eight km) in an affair that came to be known as the "Buckland Races". The Southern press began to mute its criticism of Stuart following his successful performance during the fall campaign.