Fed players cannot obtain the accolade "Siege Breaker" (defeat all 45 named dreadnaughties). The Klinguns can because there are rebel Klingun ships as well. There are no rebel Federation ships though, that makes it impossible to make the accolade work. Funny is though that Feds can get the rebel accolade by playing the new Towdewa sectorblock mission in the Gamma Eridon system.

Will there ever be a mission where Feds can actually play against Fed mubs in space except that single one which is actually supposed to be a mirror mub?

It actually never occured to me that the Accolade would be counting same-faction ships for its completion.

If this is true a fix should be in order.

Oh wow, I never thought about this, but you are right in that feds can't get this accolade.

Meow, thanks for your votes of support, Mimey and Baely.

I thought about this a bit more, but would this apply for the Incursion one as well?

I don't know about that, what does it do?