I'm playing the DA Drengin campaign, and my guys have a neat +40% "weapon bonus". Yet I can't find what its use !
In GC1 Weapon bonus was applied to ship's attack ,so a 20 attack ship with 40% bonus was 28 attack. In GC2 and DA, the weapons and ships always have the same stats whatever my weapons bonus.
I didn't notice neither any advantage to weapon size, cost or research cost.

So what's this bonus good for ?