The information below all comes from the web site Civil War Soldiers and Sailors System. This is a site provided and maintained by the federal government. These particular companies were singled out for inclusion here because they were known to have had large numbers of Gallia County men in their ranks. In the Company lists online there were often individuals listed with multiple spellings of the same name. In those cases the spelling that was deemed most likely to be correct was used so if the spelling here isn't the exact match, it still could be the individual you are looking for. 

During the Civil War, Union armies were organized as follows: