Relic, can you please do something about this unobtainable achievement?

A possible solution would be to show any letter only ONCE (and not again in a new campaign).

In it's current state, there just aren't enough skirmish battles in one playthrough because of forced auto-resolve - meaning that we mostly get the same letters and documents all over again in another campaign playthrough.

Please don't move this game in the same tricky situation like CoH2 where we have three unobtainable event achievements.

Yeah, just ignore me. I'm only a paying costumer.

Nothing to see here, please go on...

Lolz

I've got it on my first playthrough, when there were skirmish battles every time a company attack another one so it just takes a lot but its possible i belive.

No, it's definitely not possible in it's current state.

If you have the achievement it just means you played the campaign before the Steel Shepherd update...