At the commencement of Grant's Overland Campaign in May, the battery was not engaged during the Battle of the Wilderness but took part in several of the battles that followed, including the Battle of Spotsylvania Court House from May 8-12, the Battle of North Anna from May 22-26, the Battle of Totopotomoy Creek from May 28-31, and the Battle of Cold Harbor on June 1. They were engaged during the Second Battle of Petersburg and the beginning of the Siege of Petersburg from June 17 to July 9. The battery was pulled back to Washington on July 9 in response to the Confederate advance on the capital and participated in the repulse of Confederate forces during the Battle of Fort Stevens on July 12. In August, the battery was detached to participate in Maj. Gen. Philip Sheridan's Valley Campaigns of 1864 and were engaged during the Battle of Opequan on September 19 and Battle of Fisher's Hill on September 22.