Jack,

From the information I've seen he was shot by firing squad in Camden, AR Oct 16th 1864

Jim

These desertions led to the execution of Captain John Guynes, commander of Co. F, 22nd Texas Volunteer Infantry. A fellow soldier wrote:

"On the evening of the 16th [of October, 1864], we witnessed the melancholy performance of shooting Captain John Guynes, Company F, 22d Texas Infantry. He was accused of encouraging his men to desert, when we were expected to cross the Mississippi River. He was a man of about fifty years old, and very much admired by his men, and well liked by the officers of his brigade. Every effort was made to have him reprieved, but all without avail."