Engaged in the Battle of Hatcher's Run (February 5–7, 1865), the 157th Pennsylvania was then merged into the 191st Pennsylvania Infantry on March 21, 1865, and assigned to the Appomattox Campaign. According to historians of the Pennsylvania Capitol Preservation Committee, the agency responsible for the conservation of the state's Civil War-era battle flags, it was on that same day that the 157th Pennsylvania's original commanding officer, Edmund T. Tiers, requested that his regiment be given its First State Color. Although the flag was eventually manufactured by Horstmann Brothers and Company, it was never carried into battle.