E1S3 - Civil war in the North, Scenario objectives could (maybe should?) count down (and they are inaccurate)

[Konrad22]

Victory: Resist for 18 turns until...
No matter on what turn I look at the scenario objectives, this does not change. It's still the same of turn 21. Maybe make it count down or say 'Resist until Turns run out'.
As it is, it's not accurate, as I started defending in turn 3 and the reinforcements arrive at the beginning of turn 23.