Well, even if PHALANX has no official channels to local militaries, they may get information from them as being an UN organisation.
I read in the plot:
"The horror and enormity of the events in Mumbai shocked the world. The existence of intelligent alien life in the universe was no longer a matter of faith. Not only did it exist, it had made contact in the worst way. The massacres were too large and visible for Earth's governments to keep them secret. Video evidence of the smoking, blood-stained streets aired on television sets around the world. The aliens had left no other evidence of their visit; they diligently recovered their dead and collected every scrap of dropped technology before pulling out."
"Eighty-seven hours after the initial attack on Mumbai, Earth declares war. For two weeks, the armies of humanity each try to fend off the mysterious alien attackers to the best of their ability. They score precious few successes."
It means for me, that the hide-and-seek phase of the invasion is over after the Mumbai incident.
Aliens are dispatching small raids, but a terror site is all, but stealthy.
Though aliens have reason to be confident, the aliens may want to disrupt terran communication network at a certain point of the war, to isolate and annihilate military groups. (or to present a challenge to player
)