Party Crashers

In a way, the Rads were predictable. Press everyone to convert (and give their worldly possessions into service of "the cause"), or murder them in their crusade (and take their possessions anyway).
Travelling through the night, you could see the fires burning - non-compliant, looted villages set alight, or camp bonfires celebrating the latest success?
Sometimes you could tell by the sounds... other times... you could not.
The smart option was to not engage.
It might be easy.
Sneak by, while the garrisons sleep in drunken stupor.
Treat locals with respect, but do not see the pleading tears in their eyes.