The family researcher at Ancestry.com did not provide the date of his capture, but I will.

"In January and February of 1863 he is home sick.
On October 31, 1863 he is under arrest for desertion..."

He was captured July 3, 1864 at Kennesaw Mountain, GA and transferred to Camp Douglas July 14, 1864 and was received at said prison on July 16, 1864.