in the weapon forges text does classes stand for the classes in my faction or does it stand for the number of class units in an army list?
Say I have a faction with a goblin class, an orc class, and a weapon forges class. Would 2 units of goblins in my army being supplied with the armory traits weapon forges count as 1 or 2 for the purpose of the weapon forges trait?
Or can I supply all instances of the goblin class and all instances of the orc class with weapon forges 2?
Weapon Forges X grants X classes acces to the Armoury traits of the Weapon Forger. Which classes are decided when the weapon forges ability is obtained. In your example, the class with Weapon Forges 1 could give, say, Pikes, to the Goblin class. Each squad of goblins you field could take pikes if you want
Ps. I give one Armoury trait (Pikes) as an example, but iirc, Weapon Forges X shares all armoury traits of the class with X other classes