He was born in 1838/39, in Philadelphia, Pennsylvania. [sources: date: 2 (23 in 1862). place: 2]
When he enlisted, he was a boot fitter. [source: 2]
When he enlisted, he was 5 feet 7 inches tall, and had blue eyes, light hair, and a fair complexion. [source: 2]
On 2 September 1862, he enlisted, at Philadelphia, Pennsylvania, as a private in the 91st Pennsylvania. He was assigned to company A. He was enlisted by J A Gregory. Acting Assistant Surgeon J K Mason examined him, and certified that he was able to serve. His declaration was witnessed by J A Gregory, Joseph H Sinex, and George M Gibson. [sources: 1, 2]
He is listed on a muster and descriptive roll of a detachment of US volunteers forwarded for the 91st, dated Philadelphia Pennsylvania, 10 September 1862. He had been paid a bounty of $25 and a premium of $4, and was not owed more bounty. His name was not taken up on any company muster roll. [source: 2]
1 index to compiled service records of volunteer Union soldiers who served in organizations from the state of Pennsylvania (Joseph Mantz)
2 compiled military service record, A 91 PA (Joseph Mantz)
I, Joseph Mantz born in Philadelphia in the State of Pennsylvania aged Twenty Three years, and by occupation a Boot fitter DO HEREBY ACKNOWLEDGE to have volunteered this Second day of September 1862 to serve as a Soldier in the Army of the United States of America, for the period of THREE YEARS, unless sooner discharged by proper authority: Do also agree to accept such bounty, pay, rations, and clothing, as are, or may be, established by law for volunteers. And I, Joseph Mantz do solemnly swear, that I will bear true faith and allegiance to the United States of America, and that I will serve them honestly and faithfully against all their enemies or opposers whomsoever; and that I will observe and obey the orders of the President of the United States, and the orders of the officers appointed over me, according to the Rules and Articles of War.
I CERTIFY, ON HONOR, That I have carefully examined the above named Volunteer, agreeably to the General Regulations of the Army, and that in my opinion he is free from all bodily defects and mental infirmity, which would, in any way, disqualify him from performing the duties of a soldier.
J K Mason Act Ast Surgon [sic] U.S.AI CERTIFY, ON HONOR, That I have minutely inspected the Volunteer, Joseph Mantz previously to his enlistment, and that he was entirely sober when enlisted; that, to the best of my judgement and belief, he is of lawful age; and that, in accepting him as duly qualified to perform the duties of an able-bodied soldier, I have strictly observed the Regulations which govern the recruiting service. This soldier has Blue eyes, Light hair, Fair complexion, is 5 feet 7 inches high.
I, Joseph Mantz desiring to VOLUNTEER as a Soldier in the Army of the United States, for the term of THREE YEARS, Do declare, That I am Twenty Three years and - months of age; that I have never been discharged from the United States service on account of disability or by sentence of a court-martial, or by order before the expiration of a term of enlistment; and I know of no impediment to my serving honestly and faithfully as a soldier for three years.