I just found my answers:
Name: Hodijah L Tisdale
Residence: Taunton, Massachusetts
Occupation: Nailer
Age at Enlistment: 18
Enlistment Date: 12 Jul 1864
Rank at enlistment: Private
State Served: Massachusetts
Survived the War?: Yes
Service Record: Enlisted in Company 18th, Massachusetts 18th Infantry Company on 07 Dec 1864.
Mustered out on 12 May 1865.
Birth Date: 2 Dec 1848
Death Date: 28 Mar 1923
Sources: Massachusetts Soldiers, Sailors and Marines in the Civil War
Massachusetts GAR: Journal of the Annual Encampment
GAR Dept of Massachusetts 1866-1947 (Sargent)
Regiment: 18th Infantry Company Massachusetts
Date of Organization: 6 Dec 1864
Muster Date: 12 May 1865
Regiment State: Massachusetts
Regiment Type: Infantry
Regiment Number: 18th
Regimental Soldiers and History: List of Soldiers
Regimental History
MASSACHUSETTS
18TH UNATTACHED INFANTRY
One Year
Unattached Companies, Infantry.-In addition to the
various organizations previously described, Massachusetts
furnished during the war thirty companies of infantry, the
enlistments generally being for short terms of service. These
companies served either in the coast forts of the state or at
interior points where needed, and were known as unattached
companies unless otherwise designated. Occasionally a company
served for more than one term.
Eighteenth Company.-Capt., Otis A. Baker (100 days and
one year). As a 100 days' organization it numbered 3 officers
and 81 men, serving without loss; as a one-year company it
numbered 3 officers and 98 men and lost 1 man by disease. It
was organized and mustered into service at Readville for 100
days, Aug. 6, 1864, was stationed at Camp Meigs, Readville,
during its term and was mustered out Nov. 14, 1864. It was
reorganized for one year's service at Taunton, was mustered in
Dec. 6-7 1864, again served at Readville, and was mustered out
May 12, 1865.
He appears on a list of soldiers with the 18th Regiment, 18th Mass Infantry.