There are a total of 39 territories (battlefields), and at the beginning of the war, each faction (USA, European Federation and Russia) starts with 13 territories (each territory holding a cluster of uplinks vital to the missile shield). Even though the United Kingdom and Ireland are neutral in the global conflict, they have decided to let the EF occupy uplink sites built in their countries prior to the European Federation's founding in 2018. As for the USA, they appear not to have any uplink clusters on the western portion of their country nor the Russians in the east.