Quick question...

[Spitfire23]

Hey guys, i know we have quite a few aircraft experts and such and i know my stuff. However I'm not up to date on Aircraft lights (Such as mandatory ones)

So the question is, which lights are ALWAYS on during flight (I'm talking Military fighters) do all military fighters require their NAV lights (Red & Green) to be on at ALL times?

Are military fighters allowed to turn these off during night flights? maybe in some kind of training mission in formation?

Lastly, do Military Fighters have a Red light that pulses brighter and dimmer (Not strobes) constantly?

Cheers guys, i've looked over the basics but i'm not all that familiar with all lights.