Tom Clancy's EndWar

There are three city maps in Theatre of War and they are the Capitals of each faction: Washington DC, Paris, and Moscow. You must play (wins don't matter, but the 3-minute rule does apply here) a cumulative total of 30 missions on any of these maps. The difficulty is that battles in capital cities are extremely rare in Theatre of War so opportunities to get this trophy will be few and far between. If you see a city map available during the current turn (24-hour period), drop everything, find a partner and immediately start working on this trophy. With boosting you're looking at 2 hours minimum to get to 30 matches played.

To boost this, utilize the 3-minute rule so that both you and your partner receive credit for a game played. It doesn't matter who wins so just decide ahead of time which team is going to Evacuate after 3 minutes. Remember to deploy Gunships to make Evacuation go faster.

I can't stress enough how critical it is to go for this trophy when one of the maps are available. If you miss your chance, you could be waiting a month or more for another one.