Amos enlisted as a private in August 1862 and served in White's 21st Battalion, Georgia Cavalry until the 21st, 24th Battalion and the Hardwick Mounted Rifles were consolidated to form the 7th Regiment, Georgia Cavalry in February 1864. When the 7th was organized, he was assigned to Company A.

Private Waters was captured at the Battle of Trevillian Station on June 11, 1864 when forces under Gen. Phil Sheridan attempted to cut the Virginia Central Railroad between Gordonsville and Louisa Court House, Virginia. The 7th bore the brunt of much of the attack which was under the command of George A. Custer. Waters was taken to Fortress Monroe, Point Lookout and then transported to Elmira Prison, NY on July 25th.

Pvt. Waters was one of 2,973 prisoners who died at the infamous camp. His death from typhoid fever complicated by pneumonia came on September 9, 1864. He was buried in the Confederate section of Woodlawn Cemetery in Lot 172. His personal effects were listed as a hat and a pair of shoes. A.J. Iler, J.G. Moore and John Deal, all of Company H of the 7th, were witnesses, attesting to the death of Amos Waters.

His wife never remarried and is buried in the family plot at Macedonia Church Cemetery in Bulloch County, Georgia. A marker beside her grave reads,

"Memory of Pvt. Amos V. Waters Co. A 7 GA".

Information provided by William Price, great grandson of Amos Waters and by Charlton Mosley, great-great grandson of Amos Waters.