With western militaries trending down to one infantry company per nation, I started thinking about how UCAVs will be developed to support those 100+ riflemen.
Manned A/C are trending like the F-35 for "CAS" (scare quotes due to the closeness of CAS from 35k ft altitude).
But a properly-designed and -built UCAV, at an affordable price tag and purchase quantity, could bring direct cannon fire onto OPFOR at quite close range.
Which raises the question of, what cannon? We now have reliable UCAVs that could barely carry an M240, but all that tech and infrastructure to deliver puny 7.62 seems ineffective. OTOH, sizing to a GAU-8 would be overkill (American, yes, but overkill).
Standard 20mm seems too light for hammering dug-in OPFOR. Folks seem to like the 23mm cannons. A feed drum with pure anti-personnel HE? Pair with say two ATGMs?