Shenandoah Valley Campaign of 1864 Siege of Petersburg The 9th New York Heavy Artillery Regiment, U.S.

Press gives the condition of the regiment on March 11, 1864, about two months before the 9th began combat operations.

Due to heavy casualties suffered by Union Army, more troops were needed to embark on the campaign.

[14] The 9th New York Heavy Artillery joined the VI Corps on the banks of North Anna River on May 26, 1864, and then marched to the Pamunkey during the nights of May 27 and 28.

From there, it departed for Cold Harbor on May 29, guarding the wagon train along the way, where it saw its first offensive action on June 1, 1864, at the Battle of Cold Harbor, where the brigade they were part of charged at 6 pm and captured several hundred prisoners, and also managed to hold against several counterattacks on June 2.

They formed four companies, I, K, L and M.[37] This list of notable members (in no particular order) is based on bios given in Alfred Seelye Roe's book, "The Ninth New York heavy artillery, a history of its organization, services in the defenses of Washington, marches, camps, battles, and muster-out, with accounts of life in a Rebel prison, personal experiences, names and addresses of surviving members, personal sketches, and a complete roster of the Regiment".