Battlefield 2: Euro Force is the first booster pack, and was released on March 14, 2006. The booster pack allows players to play as a new European Union army, armed with new weapons and vehicles from the various countries of the EU. It is available for purchase online at the Electronic Arts download service, or as part of the retail Booster Pack Collection. It was scheduled for release in February, but was delayed due to a substantial number of new bugs caused by the release of patch 1.2. It features a whole new army, 4 new vehicles, 3 new maps, and 7 new weapons such as the L85A2 with AG36 GL, the FAMAS, the HK53, the HK21,and the Benelli M4. Some of the vehicles for the EU military include the Challenger 2, Eurocopter Tiger, Leopard 2A6 and the Eurofighter. The maps include 'The Great Wall of China', against the People's Liberation Army of China, where the EU army is trying to gain a strong foothold in northern China, to reinforce their American allies in the south later on. 'Operation Smoke Screen' features the EU army fighting the MEC in the Middle East for precious oil fields, and the third map, 'Taraba Quarry', where the EU army is trying to reinforce American positions in the south. Mindful of the European plans, the MEC tries to stall the EU, where the Europeans must confront their enemies because that route is the only possible path along that side of the Caspian Sea.
Source: Wikipedia, "Battlefield 2," available under the CC-BY-SA License.