Original members mustered out on August 10, 1864, and recruits were transferred to the 2nd Vermont Battery. The battery was engaged at Plain's Store, Louisiana, May 21, 1863, the Siege of Port Hudson, from May 25 to July 9, 1863, Pleasant Hill, on April 9, 1864, Monett's Ferry on April 23, 1864, and Yellow Bayou, or Bayou de Glaise, on May 18, 1864.