The 1870 census of Florida lists this man and other named Isaiah Hall who lived in Hillsborough County. Both men enlisted in companies assigned to the 8th Florida Regiment. Your Isaiah Hall joined Capt. Jonathan C. Stewart's Company "G", which organized at Orlando FL on May 17, 1862. Stewart had been Sheriff of Orange County in 1860. Isaiah Hall joined on June 12th and deserted during July 1862.

On June 30, 1862, Captain Stewart received seventy-six suits of jeans at Tallahassee FL. These cost $10.00 each. Along with seventy-six set of drawers and sixty pair of shoes, uniforms issued to company members at this time cost $13.60 each.

For what it's worth, up until the fall of 1859 and even later, a large majority of Southerners would have described themselves as Unionist. This would include well-to-do businessmen and planters, who felt confident that, despite the threats of abolitionists, Constitutional guarantees were sufficient to protect their personal property.