I am sure that there are a number of colleagues here on the NSF that could provide you with assistance for FREE. At some point you may be required to seek archival help - this may require payment to a researcher at a particular archive.

To provide an answer to your question requires some information:

In which countries military did your ancestor serve?

Which regiment?

What was his rank?

Was he wounded or captured?

Of course, if all of the information you have on your ancestor was provided you might get a much better response. <;^}

Steve