I must've played through the "Peace Talks" mission in Wargame: European Escalation 20 times before I finally won. Basically, you have to defend a bridge for 20 minutes. Easy enough. But apparently, you ALSO have to kill a bunch of russian units AFTER you have defended the bridge for 20 minutes. The game never tells you this, and every time in the last 2 or so minutes, the russians would fucking swarm the bridge with a metric fuck-ton of very high quality armor. That mission was a ***** to complete.