Attached in February 1863 to the 3rd Brigade of the 1st Cavalry Division, which was under the command of Brigadier-General John Buford, they next fought in the Battle of Chancellorsville (April 30–May 6), Stoneman's 1863 raid, and the battles of Brandy Station (June 9), Middleburg (June 17–19), and Upperville (June 21) before being ordered north to Pennsylvania.