Yes it was a mod, but no sadly you cant play it for free, only the old mod version.
Now for some blatant advertising
I’m a member of Iron Crescendo a Red Orchestra: Ostfront Tournament, we play battles for territories each weekend, 6 hour battles every saturday and sunday to be precise, and we have a lot of fun doing it. Generals purchase upgrades for their armies before clashing with the enemy and plan strategies in our barracks/forums. We love strategic gameplay, and there is no responsibility when you join, it is NOT like joining a clan, you play when you want to, and you don’t have to show up.
You really should join, it’s a fantastic experience, we use TeamSpeak
http://www.goteamspeak.com/
to coordinate our efforts on the battlefield.
Here’s the link, the main site is down for now, so you cant register right away, but ask in the “tech forum” for help:
http://forums.ironcrescendo.net/index.php