 Complete the following phrase:  In July 1863, Powell was shot while leading cavalry in Wytheville, Virginia. Although surgeons on both sides of the conflict believed his wound was fatal, Powell survivedand became a prisoner of war. He was later exchanged, and returned to his command of the 2nd West Virginia Volunteer Cavalry Regiment. In 1864, Powell commanded brigades while fighting mostly in the Shedoah Valley under the direct supervision of General William W. Averell in an army commanded by General Philip Sheridan. Eventually, Powell replaced Averell as division commander. Powell led cavalry in numerous battles, including Moorefield, 