According to official source, the soldiers' vote from Brown County was not received in time to be canvassed. However, these votes are included in the official tally.
Source for Popular Vote data: Ohio Secretary of State. Annual Report of the Secretary of State to the Governor of the State of Ohio, For the Year 1863., Ohio Secretary of State (https://babel.hathitrust.org/cgi/pt?id=osu.32435072553316;view=1up;seq=409;size=175) (accessed 4 Oct 2018)