The GDI headed by General Solomon from the orbital
command center The Philadelphia was started decades ago to serve as a
Global Police Force. Now their main concern is the Brotherhood of NOD
and its followers, as well as the Tiberium crisis and the mutants it is
producing.
The GDI utilizes shear power in its weaponry. From space based
to large fully armored land based weaponry, the GDI is near invisible.