Someone want to double check me here?

[Tacitus]

UNFORGIVEN TASK FORCE DETACHMENT Grim Resolve Detachment Rule Add an additional paragraph: ‘In your Command phase, select one Adeptus Astartes unit from your army; until the start of your next Command phase, add 1 to the Objective Control characteristic of models in that unit.

 

So now you can give your Hammerfall Bunker or assorted AIRCRAFT an OC of 1?   Drop a Hammerfall next to your homefield objective, then give it OC1 during your command phase?