So, in general standard if we raid a merchant caravan which can include families traveling in there and so children and other helpless non-combatants will be converted to slavery and then in case orphaned children re-educated in Asmodean fashion (so building orphanage which trains future anti-paladins or zealous Asmodean monks basically speaking). Adult slaves are not educated or pampered much and would split them off from children with a devil's promise that if they behave while being slaves their child will not suffer any manner and if they survive long enough for their child grow up and start earn cash, the child can buy off parents from slavery. Overall raiding is means to enforce the law that any caravans must pay tribute to the group or else they get raided/robbed entirely.