Was it Americas Army? I played that when it released. Not bad. I’m not a fan of shooters, but it was at least interesting to see a game that had an honest attempt at making it as “real” as possible.
The sniper mission was the only thing I didn’t complete. It had one mission where you had to sit and wait for up to 48 hours real time before you could take a shot at your target. Neat concept, but totally impractical for a game.