You lose 5% of your infamy per thrown fight (and get some 'shame'
), but at least 5 infamy per 'battle'. The threshold for 5 mobilization is 5 fear, which comes from 5 reputation level, and that is reached at 60 fame.
Since 66*0.05 = 3.3 < 5, you lose 5 fame per fight, and 66 - 2*5 < 60. Meaning two fights. But you'll go over that threshold again pretty soon, so you've sort of dug yourself into a hole.
Your 'minimum fame' is now ~14, and you can lower yourself there by running away ca 10 times.
Unless you can get poverty going, you're stuck with at least 2 mobilization now, most of the time. Not as bad as 5, but painful if you're still smaller than man-sized.
The 'extra archer' is random. In the countryside, it's more likely to be another hunter. On the roads and in the mountains/sky, you
start with an archer. The forest has elven rangers and maybe even boars, and sea has sharks and mermen. And 5 mobilization is bad, because there's now ~20% chance that you won't run into bowmen, but something stronger. Footmen, mounted patrols, druids, dwarven warriors, even catapults, depending on location. And if mobilization rises even more, these things get progressively worse, up to and including full parties of angelic warriors, titans with griffins as support, fleets of battleships etc.
Mobilization is
bad if you're not a hard-ass dragon.