 This reduction had a direct impact upon Jackson's ability to defend the lower Shenandoah Valley, and led to the need to evacuate Winchester on March 9 in the face of superior forces advancing to Winchester under Union Maj. Gen. Banks.Therefore, despite having prevented Rosecrans's goal of taking Winchester in January or February 1862, the insurrection of Loring's Division and its subsequent reassignment led to the inevitable seizure of Winchester by General Banks in March.It was not until Jackson was able to be reinforced with more disciplined and seasoned troops from Major General Richard S. Ewell's Division that he would be able to retake the initiative in the Shenandoah Valley.