[quote=@ClocktowerEchos]
[@Skepic][@Willy Vereb]
I think he's against them so people aren't like "oh, I'm all jet fighters dat r supa fast n shit. U can't catch me since jets go fasta den propellers."

I think the overall reason for the time shift is to prevent people from going into the late ww2 stuff of jets and guilded rockets/explosives and automatic rifles and all that stuff.

<Snipped quote by Willy Vereb>

If that's the case why not have all your pilots wear earmuffs or sound proof helmets with radios in them? I can't see how those would at least bring them down to acceptable levels.
[/quote]Earmuffs only make sense if you have modern or at least cold war era avoinics where you barely use your five senses and instead rely on the devices.
Elves are the complete opposite. Their smallest fighters lack absolutely any avionics and they only have a radio and a gunsight. It works because they're elves with enhanced senses including something similar to natural gyroscopes so they can navigate without devices. But if you have them wear earmuffs it dulls one of their senses.
Granted, warzones would be noisy as hell anyways so elven soldiers would just need to get used to things.
Still, jets may give an unique flair to my nations. I can reason away why I am using jets while the rest of the world does not. Also I sure don't wish to be OP. Having some advantage in aircraft tech, sure. Mithril is nice in that. But stomping my opposition in the air, hell no!

Anyways, what's OP about automatic rifles? It's called machinegun and they're older than almost any other weapon used in Ww2.
Same way guided rockets are actually kind of old. Reliable guided rockets, though? it'd be different. Maybe if they are similar to my flying bombs, huge so there's enough space for the equipment.