Soldiers are initially fielded in squads of four but this number can be expanded up to a maximum of six as the game progresses. XCOM’s soldiers are humanity’s first and last line of defense against the alien invaders and serve as the primary and most valuable combat units in XCOM: Enemy Unknown. The player commands troops in the field in a series of turn-based tactical missions between missions, the player directs the research and development of technologies from recovered alien technology and captured prisoners, expands XCOM’s base of operations, manages finances, and monitors and responds to alien activity. The player controls an elite multinational paramilitary organization called XCOM during an alien invasion of Earth.
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