Organized at Readville and mustered in December 13, 1862. Left State for Dept. of the Gulf January 20, 1863. Attached to Defenses of New Orleans, La., to June, 1863. Artillery, 4th Division, 19th Army Corps, Dept. of the Gulf, to August, 1863. Defenses of New Orleans to March, 1864. Artillery, 1st Division, 19th Army Corps, to June, 1864. Defenses of New Orleans to July, 1865.
SERVICE.--Duty at Apollo Stables, New Orleans, until June 5, 1863. Moved to Port Hudson, La., June 5. Siege of Port Hudson June 6 to July 9. Assault on Port Hudson June 14. Surrender of Port Hudson July 9. Duty at Port Hudson until August 31. Ordered to New Orleans and duty there until September 17. Battery attached to 2nd Massachusetts Battery September 18, 1863, to February 17, 1864. To 6th Massachusetts Battery until March 6, 1864, and to Battery "L," 1st United States Artillery, to June 28, 1864. Duty in the Defenses of New Orleans June 30, 1864, to July, 1865. Mustered out July 28, 1865.
Battery lost during service 26 Enlisted men by disease.