His Federal service records are not available on-line, however, they and his pension records may be procured through a service provided by these message boards, see:

http://history-sites.com/research/

….

Brief histories of his units are available at these sites:

http://en.wikipedia.org/wiki/3rd_Colorado_Infantry_Regiment
http://en.wikipedia.org/wiki/2nd_Colorado_Cavalry_Regiment

………………………………………………………………………………

George Ammel

Residence was not listed;
Enlisted on 10/1/1863 as a Private.

On 9/1/1862 he mustered into "F" Co. CO 3rd Infantry
(date and method of discharge not given)
(Estimated date of enlistment)

On 10/1/1863 he mustered into "H" Co. CO 2nd Cavalry
(date and method of discharge not given)
(Estimated date of enlistment)

Federal Pension Information:
He applied for a pension on 6/15/1897 from the state of IA
application # 1,192,755
His Widow (Harriette B Amy) applied for a pension on 3/1/1900 from the state of IA
application # 714,206
He applied for a pension on 11/6/1889 from the state of KS
application # 737,222

Sources used by Historical Data Systems, Inc.:
- Index to Compiled Military Service Records
- National Archives: Index to Federal Pension Records

…………

This may refer to him:

Re: Plobsheim, Bas-Rhein, France
penelopein (View posts)
Posted: 27 Feb 2010 2:51AM GMT
Classification: Query
Gean Georges Ammel is my husband's great-great-great grandfather. I too am looking to trace this and other related lines in Plobsheim. Can you help and tell me how to get a copy of the Plobsheim books of Births, Deaths, and Marriages? I would love to give the books to my husband's grandmother who descends from the Ammel's. Thanks so much.
http://boards.rootsweb.com/thread.aspx?mv=flat&m=1366&p=localities.weurope.france.alsace