He was 31 years old when he enlisted in 1861 (9, 10). He was born in Philadelphia, Pennsylvania (9).
When he was enlisted, he was a butcher (9, 10). He was living in Philadelphia when he was enrolled (10).
He was 5 feet 6-1/2 inches tall, and had a light complexion, grey eyes, and light hair (9, 10).
He enlisted and was mustered into service as a private on 9 September 1861, at Philadelphia, Pennsylvania (1, 9, 10). He was enlisted for three years, at Philadelphia Pennsylvania, by Captain McArthur (9). He served in company A (1).
On 19 March 1863 or 20 March 1863, he returned to duty from Brigade Headquarters (4 [19th], 5 [20th]).
He fought at the Battle of Gettysburg (13).
He was promoted to third corporal, on 1 October 1863 (3, 7, 8, 10).
He reenlisted as a veteran volunteer on 26 December 1863, at Bealton, Virginia (1, 10).
On 26 March 1864, he was reported sent to hospital (11).
He was promoted to sergeant on 11 October 1864 (3, 10, 12).
On 13 June 1865, he went on a furlough (6). He returned when it expired, on 28 June 1865 (6).
He mustered out on 10 July 1865 with his company, as a sergeant (1, 10).
1 Bates, Samuel Penniman. History of Pennsylvania volunteers, 1861-5. Harrisburg: B. Singerly, state printer, 1869-71. 5 volumes. 'Ninety-first regiment', volume 3, pages 186-233. (In the roster)
2 special order 99, HQ 91st PA, 1 October 1863
3 special order 93, HQ 91st PA, 11 October 1864 (Jacob P Fisher)
4 consolidated morning report, 91st PA, 19 March 1863 (Private Fisher)
5 consolidated morning report, 91st PA, 20 March 1863 (Pri Fisher)
6 enlisted men's furloughs (Jacob Fisher)
7 consolidated morning report, 91st PA, 1 Oct 1863 (Priv Fisher)
8 register of non-commissioned officers, co.A (J [?] P Fisher)
9 company A descriptive roll, entry 18 (Jacob P Fisher)
10 Civil War Veterans' Card File, available at the Pennsylvania State Archives, searched 5 May 2004 (Jacob P Fisher)
11 consolidated morning report, 91st PA, 26 March 1864 (Corpl Fisher)
12 consolidated morning report, 91st Pennsylvania, 13 October 1864 (Corpl Fisher)
13 Pennsylvania Memorial, Gettysburg, Pennsylvania (Jacob P Fisher)
[I did not find him in the <www.ancestry.com> index to the 1890 veterans' census]
[I did not find him in the index on <www.ancestry.com> to the pension index by name (searched April 2006)]