Most likely it was a move primarily about getting senior level execs at those companies into the military machine -- and into the chain of command of that machine. It makes those companies 'disclosing' data to the military much more likely, as well as tweaking apps to aid in military operations.

Like havin the CTO of meta "in the circle", likely gives them complete access to meta's tracking data for any target they want, in a more efficient way than previous.