research upgrades to improve certain units. In addition, players can also deploy superweapons which can decimate an opponent's forces, though must wait for a cooldown period to end before they can use it again. Factions in the game function similar in how they operate, but maintain differences in units and strategies: The United States rely on high-tech weaponry, such as drones, and a dominant air force to deal with opponents, and are able to use supply units to airdrop rifle infantry into occupied buildings, alongside flash grenades, to clear them out. In addition, they can improve power plants, their defensive structures link together to deal with enemy units, and they collect more supplies than the other two factions, but units are more expensive to produce. China relies on stronger tank and artillery units, and can use hackers to claim buildings or produce additional funds. In addition, their troop transports can detect stealth units, while their tanks and infantry can occur horde bonuses when grouped together. However, their power plants can cause damage to surrounding units and buildings when destroyed, they maintain a weaker air force, and require large armies to make horde bonuses work effectively. The Global Liberation Army rely on cheap units and terrorist-styled guerrilla combat to overcome opponents, in which several vehicle units can be upgraded by salvaging parts from defeated enemy vehicles (infantry can also claim this for funds), using specialised infantry units to create ambushes and considerable damage. In addition, they do not require power for base structures, and any buildings that are destroyed will be automatically rebuilt if the enemy fails to destroy a tunnel entrance that is left behind. However, they must use builder units to collect supplies, with several needed to ensure funds are steady, and cannot build air units; this is compensated by having more anti-air units than the other two factions. Generals functions differently to other titles in the series, in that base construction relies on dedicated builder units rather than a central construction building, but with the added ability of being able to construct buildings anywhere on the map. Resources are restricted to supply docks that have a limited amount for collection, with each faction able to construct units or buildings that provide continual resources as long as they are not destroyed. In addition, players can also make use of "Generals Abilities" - a unique set of bonuses that can