The closest to the game he is asking for I can think of now is UMS. (but not THE same) The first one and the third one. You can pretty much set any battle from ancient times to 19th century.
Finding any of the games will prove extremely difficult. I used to have the first two but no more
I never got the third one but from what I heard it is more like an extended remake of the first one.
I am talking about old games, the first was made in 1987 or something and the third (last one) in 1994 or 95. With all the problems this brings, like GUI, graphics etc. Still, great games.
If you want more, you will need to go even further back, to the early days of SSI. Great games, but if you are used to crazy things like the mouse or colours, you might have issues with them. (or even finding the games of course)