[kalbron]

It seems that in the VC world, unlike real life, air power never really caught on after the end of the first Europa world.

Possibly due to:

Spoiler for Game Details:

Professor Theimer, Isara's blood father, seemingly being the pioneer of aviation technology, hence Isara using his notes to construct the "first airplane". However he was a Darcsen, so they pretty much ignored most of his innovations except for the ones involing basically every aspect of the Gallian armament. Seriously. It's like he designed just about everything for them.