according to:Compiled Military Service Records of Volunteer Union Soldiers Who Served With the United States Colored Troops (only 2 pages in file) Oct & Nov 1863 present December 1863 absent with leave, to return January 4, 1864. January to July 1864 , present August & September absent sick in Chesapeake General Hospital since August 3, 1864. October thru November 1864, Absent sick. December 1864 to June 1865 present. .. http://dmna.ny.gov/historic/reghist/civil/rosters/Artillery/9thArtCW_Roster.pdfhttp://dmna.ny.gov/historic/reghist/civil/rosters/Artillery/9thArtCW_Roster.pdf HARKNESS, EDSON J.^-Age, 19 years. Enlisted, August 8, 1862, at Ontario, N. Y . ; mustered in as corporal, Co. B, One Hundred and Thirty-eighth Infantry, August 14, 1862 (which became the Ninth Artillery, December 19, 1862), to serve three years; discharged, September 19, 1863, for promotion to captain in Sixth United States Colored Troops.
His full service is noted as in Company "B" 138th N.Y. Infantry - Aug 8, 1862 to Dec 19, 1862 Company "B" 9th nY Heavy Artillery - dates not given Captain of Company "R" 6th U.S.C.T pension index states he died Feb 14, 1926 at Oberlin, Ohio. ........ New York, Town Clerks' Registers of Men Who Served in the Civil War Name: Edson Jessie Harkness Birth Date: 31 Aug 1843 Birth Place: Ontario, Wayne County, New York Father: Sonthard Harkness Mother: Harriet Foot Residence Place: Ontario Enlistment Date: Aug 1862 Enlistment Location: Ontario, Wayne, New York Regiment: 9th Heavy Artillery Company: B Rank: Captain Race: White Marital Status: Single ... see http://www.findagrave.com/cgi-bin/fg.cgi?page=gr&GSln=Harkness&GSiman=1&GScid=44072&GRid=51024530&http://www.findagrave.com/cgi-bin/fg.cgi?page=gr&GSln=Harkness&GSiman=1&GScid=44072&GRid=51024530& Find a grave death date differs from pension index record http://www.findagrave.com/cgi-bin/fg.cgi?page=gr&GRid=51023473http://www.findagrave.com/cgi-bin/fg.cgi?page=gr&GRid=51023473