Do you guys play DoD just to casually run around killing people, or are you more interested in a WWII-style strategic battle? In my experience, DoD players tend to be a little more "serious" about the game in terms of realism than other FPS games.
Anyway, I'm definitely more of a strategic type guy, and a few months ago I found this great tournament for it at
http://dod.battleforeurope.com (which I really like because they have specific British and Para divisions). There's actually a new campaign starting in about a week and I encourage anyone who's interested to check it out.