I assume US/RU/CN/etc will drop them from stealth and supersonic bombers. Everyone else will use basic bombers and cargo planes if they can punch a hole in AA defenses and if they cant, release them from 20ft shipping containers or box trucks as close to enemy lines as possible.

They’re also small enough to deploy with infantry.

You could probably fire them with special artillery shells, just as deploying remote minefields or cluster munitions.