Scornful Analysis (1CP, start of your Shooting phase). Target one friendly HERNKYN unit. Select one visible enemy unit within 12 inches of it. Until the end of the phase, friendly LEAGUES OF VOTANN units' attacks against that enemy unit have [IGNORES COVER].
This is the reason to take the detachment. Note the scope: the Hernkyn unit does the spotting and the whole army collects. A single 1 Command Point spend can strip cover for a Hekaton Land Fortress, a Thunderkyn firebase and every rifle on the table at once. The value of a Hernkyn spotter scales with the size of the guns standing behind it, which is why this card pairs so well with detachments that have nothing forward of their own.
No Shot Wasted (1CP, your Shooting phase, when a friendly HERNKYN unit is selected to shoot). Your unit's ranged attacks have [LETHAL HITS]. This stacks with the detachment rule's +1 to hit inside 12 inches, so the same positioning decision pays twice in the same phase.
Economy of Motion (1CP, your opponent's Movement phase, when an enemy unit ends a move within 8 inches of a friendly unengaged PIONEERS unit). That unit can make a normal move of up to D3 plus 3 inches.
The trigger is 8 inches, not 9. Several reaction ranges across this edition's packs were tightened to 8 in this pass, and if you learned this card at the older figure you are now an inch out of position.