Good to see these games getting an upgrade and a new lease on life. Thanks, Matrix!
I've been playing these since their first release and over the years have kept a list of download sites. Here it is.....
1. Napoleonic Archive
Here you can download Austerlitz, Ulm, Saalfeld, Gunzberg, Auerstadt, Jena, Marengo, Montebello, Eylau and Toulouse
If you check the Links page there, select Bolchartos File Front where you can download Vittoria, Laon, Craonne, Montmirail, Lutzen, Friedland and a few others.
I think most, if not all, of these scenarios were originally part of the NiR Project.
2. NIR Project
There's not much left there that appears downloadable (only the enabled links on the above page) and you need a password from Jean-Marie Barbier for the first map file.
3. Scenario Design Center
Many scenarios and add-on files for the Battleground series. The files are now stored at the GameSquad Download section
4. John Tiller's old scenario page
This is a very old page, but I think the files are still downloadable. I think most, if not all, of these files are also on the GameSquad Download section.
5. American Civil War Cartography Office
Many Civil War battles... Belmont, Chancelorsville, Vicksburg, Fredericksburg, New Market and many others including a Mexican-American War add-on. This is also an older page and I spot-checked a few links and the files appear downloadable.
I spot checked these links and think they all work, but most are pretty old sites so things may be missing here and there.
Be aware that most of the add-on scenarios from these sites are PBEM type so there is no AI script.
That's all the sites I know of that still have content. Over the years there were more, some converted to the HPS series and some just went away. Who knows, with the Matrix upgrade maybe a few will return....
My thanks to all the folks that created and make available these add-ons.
Also, if you are interested in Waterloo, this site
is worth checking out.