For every 2 orcs they are as strong as 3 individual orcs.
According to chapter 100 men can kill 100 orcs.
Write the equation for 3000 orcs, you have an hour.
@monkaS
If we assume that f(x) = k*x^a, where f(x) is the number of soldiers needed to defeat 100 orcs, then, given the conditions cited in the chapter (f(2x) = 3*f(x), f(100) = 100 and f(200) = 300), k ~ 0.07 and a ~ 1.58.
f(1000) ~3846
f(3000) ~ 21937
BTW, a single orc is a pussy, defeatable by 0.07 men. Even the red orc can be solo'd by a guy as strong as 0.39 average soldiers, as long as it's one on one.
@AlmondMagnum
Yeah, I agree. I meant it in a "they're going to get the big city guys moving by giving them the weaker soldiers they have" + turning some of his current city's population into military" way.
(Also a random ability that boosts their strength because that's how it is).
I think the answer is going to be something along a alliance with the orcs to trade with them and/or stealing their food. If you cannot beat your enemy join them right?