This page refferences a game mechanic.
A communications array is a series of installments at set points around the world which allow players to further communicate and organise their armies, to the point they can capture one extra sector per weekly period.
The communcation array is a strategic position and can be found dotted around the world, It also provides a bonus within 1000 miles of 0.01 in battle.
A full list can be found in "Strategic positions"