These therads tend to get garbled, and somewhat nasty, from a couple of reasons:
1) People who hate alignment and think those people who use it are stupid, and look for contrived means to set up a situation, or,
2) People don't realize that there fixed, definite, and cut-and-dried definition about what the "Lawful Good" thing to do has to be might not be what someone else thinks it is .
I'm not saying that is what is happening now, but it will probably happen before the thread is over.
Your example has set up a situation in which (apparently) the forces of good have destroyed a tribe of humanoids to such a level that any orc (or whatever) capable of providing for the tribe has been destroyed. This is in itself a contrived situation, but it might be a helpful one, we'll see. Obviously, in most cases, even a full defeat of an attacking horde will not result in the complete destruction of the horde, so the young are not just abandoned in the wild.
But suppose that happened. Assuming that humanoids have the same level of free will that huamns and demihumans are expected to have, it would not only be "good", but also expedient to transfer the young to a missionary organization for the purposes of raisong them. This has real-world parallels. If the clash happened because human/deimhuman civizations were encrouching upon humanoid lands, the humanoids would probably be dumped on some equivalent of a reservation. The culture might end, and the tribe would stand an excellent chance of dying out, but not through violence.
Sundragon2012 said:
What is the impact of the PCs smashing a hobgoblin town or goblin stronghold upon the most defenseless within.....the humanoid children and the weak, elderly or ill. If these humanoids do not just kill the infirm anyway that is.
See above, if and only if the raid actually did kill *all* of the capable adults. If this sort of thing happens commonly in a campaign, the actions of "good" are the least of your realism worries.
According to some, you are supposed to raise them, foster them to loving human families, hand them over to someone sympathetic....anyone as long as you don't kill them because that would be evil.
A missionary/reservation system would not go to quite the ridiculously extreme length of considering foster families for each goblin child, etc.
In your setting what happens to all the orphaned orc, goblin, hobgoblin children once their parents are slaughtered in wars of attrition against humans, dwarves or elves when the beasts decide to swarm local communities for plunder, slaves and food?
My players have never had a point in which this has happened because even the craziest orcs in my world don't leave the kids sitting out on the hillside while they go rampaging, nor do they fight until every last one of them is dead.
Can paladins ever make war or be involved in wars when it is a certainty that orphans will be made and the creatures will starve or be killed by predators in an unforgiving wilderness?
Perhaps the better question would be if they could ever *start* an aggressive war. After all, if they just sit back when they or their allies are attacked, there would still be suffering inflicted upon the helpless. Answering this question as I see it might be a mistake in this thread as this decision is connected to a number of current political topics.
Are paladins and good aligned PCs expected to set up infrastructures to prevent the deaths of thousands of orcish, goblin and assorted humanoid children after their parents and kin have been put to the sword? Where do they set up the humanoid orphanages?
If they don't build orphanages, but send missionaries to the humanoid villages, this is not a problem.