Just an update....
I'm updating it now with all these new units using "flavor" units for differant nations and ethnic groups. I'm doing it with the "BtS" method, instead of unique units (as-in Warlords and Vanilla Civ4), so it won't clutter up the civilopedia.
The Wolfshanze Mod (working on v2.0 right now) is mostly a graphical update for BtS, and it adds-in more naval units... Galleas in medieval times, and the industrial age has three Ironcload types, pre-dreadnoughts and protected cruisers, as well as dreadnoughts, WWI Destroyers and modern cruisers.
When I'm done, I'll have added WWI tanks and aircraft and (of course) unique units for nations from ancient times to WWII. This is a BtS mod only.
Other then adding-in flavour graphics, new naval units and WWI fighters and tanks, the base game is pretty-much unaltered. Oh... and I added Hitler and Hirohito to the game as leaders too.
What's here at the moment is still v1.x... not sure on the completion date of v2.0, but I'll have to host it elsewhere (but linked here), it's already a 60-meg download!