Fatigue mechanic in WOTC


A mechanic was added in the War of the Chosen expansion around fatigue. When soldiers are repeatedly sent on combat missions, they can become “Tired”. This will not prevent them from going on future combat missions but it will reduce their Will stat, which makes them more likely to panic, less likely to resist alien mind control or other psionic powers, and more likely to gain negative traits or permanent disabilities.

Basically, this mechanic was put in place to prevent players from constantly sending in their “dream team” of soldiers and not level up more than just a core few.