Investigate Signals

In your Shooting phase, you can select one or more
units from your Army that are not Battle-shocked
and are eligible to shoot. Until the end of your
turn, the units you selected are not eligible to shoot
or declare a charge.
At the end of your turn, each corner of the battlefield that has one or more of these selected
units wholly within 9" of it is scanned by your army.
If one or more corners are scanned by your army,
this Secondary is achieved and you score 2VP for
each corner scanned by