According to William Beckmann he was born in Saxe-Weimar Germany which may be the same place as your information.
He enlisted in Company F 2nd Texas Infantry on September 5, 1861 in Galveston, Tx.
You are correct in that he was wounded in his calf on April 7, 1862 at the battle of Shiloh and taken to Camp Chase.
It would appear that he had a brother named Augustus Beckmann.He also would join Company F of the 2nd Texas Infantry and enlist in the same place on the same date.Augustus ironcially was also wounded in the leg on the same day at the same battle. His wound was to his knee.He was taken to Camp Dennison to a POW hospital and would die of his wounds on May 9, 1862.In May of 1869 his body was reinterred from Camp Dennison to the Camp Chase Cemetery.Today his tombstone reads A. Bergman Co. C Texas Rangers.It is in fact Augustus Beckmann Co. F 2nd Texas Infantry.The only item that Augustus Beckmann left behind when he died was the German Testament.