[wolf90]

I've started reading the "Old Guy" chronicles, and the issue is actually addressed in those stories as to why humans would create completely self-aware massive cybertanks. The argument in the stories is that by having free-will, the tanks can choose to follow, or not follow, human requests for assistance. As long as the humans are engaging in honorable actions, the tanks will grant the requests for assistance in battle as there is a degree of loyalty and camaraderie engendered by the relationship and gift of sentience.

Obviously the Ogres of the Last War initially are not self-aware, and thus would have loyalty programmed. But as they became self-aware, such programming would be rendered more of a suggestion than an absolute order, which can be overridden by the Ogre.

Consider reports of families divided during the Civil War - there are details of family members fighting for both sides. Each individual chose for whom they fought.

And re: Nightfall, yes, the very issue of an Ogre choosing a side is in there. As Steve mentioned, how do humans switch loyalties? Through propaganda and/or persuasive argument, self-reflection and a sense of aligning one's actions to their core beliefs. Why should any other self-aware entity be any different?

D.