He arrived in Confederate hands from prison for exchange March 10-12, 1865. Doubtful he was able to
return to his regiment before war's end.

Joseph Hamon was transferred to Chimborazo Hospital, Div. 2, Richmond, VA., April 14, 1863

Note, believe Division 2 the same as Hospital No. 2

Records of patients for Chimborazo may be found at the National Archives in Washington, DC in Record Group 109

See:

National Archives; Chimborazo Hospital
http://www.civilwarrichmond.com/hospitals/chimborazo-hospital/3918-national-archives-chimborazo-hospital

These records are difficult to research and not all record disease, and that usually being somewhat brief.

……..

Their Regimental Casualty Analysis found at civil war.com list only these engagements..

07/21/61 Manassas, VA

08/17/62 London, KY

03/30/63 Somerset, KY

05/14/64 Resaca, GA

07/15/64 Atlanta, GA

07/21/64 Atlanta, GA

09/01/64 Paulding County, GA

…..

A Goggle Search 1st Georgia Cavalry, yields these hits:

https://www.google.com/search?site=&source=hp&q=1st+Georgia+Cavalry&oq=1st+Georgia+Cavalry&gs_l=hp.3..0j0i22i30k1l3.6712.14513.0.16758.20.14.0.6.6.0.142.1564.2j12.14.0....0...1c.1.64.hp..0.19.1587.0..0i131k1j0i3k1.gt_0lyMi1CA