Battleground Bundle including the following games:
Commandos 3: Destination Berlin
Commandos 2: Men of Courage
Commandos: Beyond the Call of Duty
Commandos: Behind Enemy Lines
American Conquest: Fight Back
Cossacks: Art of War
Cossacks: Back to War
Cossacks II: Battle for Europe
I highly recommend this bundle, I'm a big fan of Cossacks and have recently got into American Conquest which is very similar.
If you don't already have the base games then I suggest you look at the bundle previously posted - https://www.ozbargain.com.au/node/141475
Apparently both the Art of War and Back to War are stand alone expansions meaning that you don't need the Cossacks European Wars base game to play. The Art of War just has additional campaigns/missions over the original European Wars as far as I'm aware. If you want to play multiplayer then you will need the Back to War expansion as it's not included in the others. Feel free to comment if you know more.
"Beyond the Call of Duty" - so, it's like, actually a good game?