The Fifteenth Heavy Artillery's Co. M was mostly recruited in Orange County in the winter of 1863-4. The regiment was mustered in at Fort Lyon, Va., February 3, 1864, remained there until March 27th, when it went to Beverly Station and was assigned to duty in the Artillery Reserve of the Army of the Potomac, and did creditable service in several bloody battles. When Co. M was organized its officers were: Wm. D. Dickey of Newburgh, captain; Alfred Newbatt and Julius Niebergall, first lieutenants; John Ritchie and Robert B. Keeler, second lieutenants. August 15th Captain Dickey was placed in command of the Third Battalion and Lieutenant Ritchie took command of the company, leading it through the engagements in the struggle for the Weldon railroad, in one of which it lost in killed and wounded a third of its men. For the regiment's good work here and in a previous fight at Haines' Tavern it was complimented in the general orders of Meade. Co. M was mustered out in July, 1865. It lost during its year of service three officers and ninety-five privates. The promotions were: Captain Dickey to major, Second Lieutenants Keeler and Ritchie to first lieutenants, and Sergeants Joseph M. Dickey and Riemann to second lieutenants. This Seventeenth Independent Battery was recruited in Orange to be a part of Colonel Van Wyck's "Tenth Legion" or 56th Regiment. It arrived in Washington November 11, 1861, and was organized as an independent battery January 10, 1862. It was first assigned to Casey's, afterwards Peek's division. It also served in the Seventh Corps, then in the Second division of the Eighteenth Corps, at Bermuda Hundred a short time in the Tenth Corps, and when mustered out formed a part of the artillery brigade of the Twenty-fourth Corps. It was in the siege of Yorktown, the battles of Williamsburg, Savage's Station, Fair Oaks, Malvern Hill, the siege of Suffolk, and was in action at Petersburg, Dutch Gap, Fort Harrison, Hatcher's Run and Port Walthal. It was in the investment of Petersburg and Richmond. It suffered most severely at Fair Oaks. Its record was good throughout. Its commissioned officers were: Captain: Peter C. Regan. First Lieutenants: Eugene Scheibner, Abram Kniffin, Martin V. McIntyre, John S. Bennett. Second Lieutenants: Abram Kniffin, Charles S. Harvell, Abram Smith, Wm. H. Lee, Edward Kelly, John B. Brosen, Jr. The First Regiment of Engineers, known as Serrell's, had in its ranks, it was said, 300 or 400 men from Orange County. Its detachments were mustered in between September 10, 1861, and February 12, 1862. The regiment retained its organization until June 30, 1865, when it was mustered out, but there were various changes in its composition. It was an important regiment in the engineering part of the service.