These games (Stalingrad, D-Day American Invades, Operation Crusader from W@War series and Gold-Juno-Sword, Utah Beach, Velikiye Luki, and Market Garden from V4V series) are really imo the best war/strategy games ever released for any platform.
If you are interested in PBEM'ing any of them hit me up I'll play these any day and forever.
If you want to play them you can run them easily. Go download D-Fend Reloaded (google it).
http://dfendreloaded.sourceforge.net/ then install it.
Download the games, for example Stalingrad is at:
http://www.myabandonware.com/
Download the Stalingrad manual at
http://replacementdocs.com/ (just search for Stalingrad manual there)
This tutorial tells you how to set up d-fend reloaded and install a game. it's a little old so don't choose "wizard" option when adding a game, choose manual and then pick dosbox not windows game (you'll see what I mean when you go through tutorial):
http://www.myabandonware.com/howto/
then unzip stalingrad into the folder that you get during step 3 of the d-fend tutorial above
Then start the game through d-fend. that's all there is to it - very simple.
These games really are so deep, so good, and so unique that if you like strategy games you owe it to yourself to dive into these games. And once you are up to speed hit me for some PBEM.