 The battle, part of Sheridan's 1864 Valley Campaign, was a decisive cavalry engagement, after which the Union finally achieved cavalry supremacy in the Shenandoah Valley.After the war ended in 1865, the B&O gained control of the O&A, and in 1867, the Manassas Gap Railroad as well, merging them to form the Orange, Alexandria and Manassas Railroad.The damaged portions of each were repaired, and new construction resumed up the Shenandoah Valley from Mt.