Henry H. MILES served in Co.H 110th Pa Infantry. He (and later his widow)applied for, and received a civil war pension. (as per his civil war pension card)
You can send to NARA for his pension records. Order the complete packet for $75. This includes all records in the file, up to 100 pages, and should give you great documentation. The small, cheaper file only includes up to 8 pages.
Go to :www.archives.gov/veterans/military-service-records/pre-ww-1-...
Form NATF 85D - Fed. Military Pension Application-Civil War and Later Complete File