3rd New York Heavy Artillery Battalion

1861

Organized at New York City as a battalion of five companies

October-December

Mustered in under Lieutenant colonel Adam Senges

December 19

Left State for Washington, D.C. Attached to Military District of Washington for duty in the Defenses of Washington South of the Potomac at Fort Lyon, Virginia

1862

February

Attached to 1st Brigade, DeRussy's Division, 22nd Army Corps, Dept. of Washington

June

Attached to 2nd Brigade, DeRussy's Division, 22nd Army Corps

1863

September 30

Consolidated with 15th New York Heavy Artillery as Companies A, B, C, D & E.