John Valentine Eberlein enlisted in the U.S. Cavalry, 2nd regiment, on 12 January 1885 in Chicago. He served his five-year term of service and was discharged 11 January 1890 in Boise, Idaho.

Source: Ancestry.com, U.S. Army, Register of Enlistments, 1798-1914 (Provo, UT: The Generations Network, Inc., 2007), database online. Record for John V
Eberlein.