Eternalknight:
Some points to consider...
Alignment is, in my experience, best used as a long term average of behavior. One or two isolated acts do not indicate an alignment change. When the character has established a pattern of behavior that is different than what's on the sheet, it is reasonable to consider that his alignment ahs changed.
The moral and ethical value of an act in game is not based solely on the character's motivations. Why he did it matters, but exactly what it was he did also plays a part. If in your world the slaying of innocents is an evil thing, then the fact that in his own mind he wasn't being particularly malicious fails to make it worse, but it doesn't make it better, either.
The fact that an act has consequenses should be considered as a separate issue from alignment. Good acts have consequences, evil acts have consequences. If you consider applying consequences only because the act is evil, you aren't being even handed.
Say killing the children is an evil act. It has consequences (the remaining hobgoblins get ticked off). Killing a particularly viscious pack of adult hobgoblins may be a good act, but it has pretty much the same consequences - the remaining hobgoblins will still get ticked off.
Some points to consider...
Alignment is, in my experience, best used as a long term average of behavior. One or two isolated acts do not indicate an alignment change. When the character has established a pattern of behavior that is different than what's on the sheet, it is reasonable to consider that his alignment ahs changed.
The moral and ethical value of an act in game is not based solely on the character's motivations. Why he did it matters, but exactly what it was he did also plays a part. If in your world the slaying of innocents is an evil thing, then the fact that in his own mind he wasn't being particularly malicious fails to make it worse, but it doesn't make it better, either.
The fact that an act has consequenses should be considered as a separate issue from alignment. Good acts have consequences, evil acts have consequences. If you consider applying consequences only because the act is evil, you aren't being even handed.
Say killing the children is an evil act. It has consequences (the remaining hobgoblins get ticked off). Killing a particularly viscious pack of adult hobgoblins may be a good act, but it has pretty much the same consequences - the remaining hobgoblins will still get ticked off.