I'm pretty sure there was a skirmish mode and editor as I recall playing around with the map. It's been a long time...

Home of the Underdogs mentions it:
http://www.homeoftheunderdogs.net/game.php?id=2804

"Aside from the four campaigns, there is a full tutorial and a potent map and scenario editor. Multi-player support allows for four gamers over LAN or TCP/IP and two over a direct connection. A number of multi-play scenarios offer a variety of challenges, such as building forces from scratch, starting with a large force, racing for a marker, and team play. "

The Skirmish mode does not work with the GOG version of either WarWind game.

That is unfortunate.

Skirmish mode works for me in WarWind 1, but I only tried single player. If there are multiple computer opponents, they will apparently not attack each other no matter alliances, they only attack the human player. So it's quite limiting how you can play skirmish single player and make maps. But for multiplayer it would be really nice, there are some interesting mode like Treasure Hunt (must find I think 4 different items on the map and place them in your Town Hall to win the game), for example. If somebody gets to try multiplayer and made it work let me know : O

i had no trouble getting multiplayer working but, i have ip version 6 disabled on one of my pcs.(i have played both games multplayer several times) you might need to disable it to get it to run. i still have no idea how to use certain units however. i can not build surveliance satelites for example.