"Do rocket science or some stuff. Space is still a fresh battleground to be conquered."
So is the field of ICBMs, NAUC doesn't really have a lot of those. Back in the 4970s, after Mercana put a man on the moon, both Mercana and the Imperium started thinking "how can we weaponize this", started phasing out their nuclear bombers and began working on rocket-based delivery vehicles for nuclear weapons. NAUC, instead, kept making bombers, with the end result being their air navy. That's not to say they have
no nuclear missiles, but what they do have is mostly limited to submarine/air launched SRBMs and cruise missiles.