I've been musing briefly on army alignment lately. For those who don't know, on the tabletop, Armies are split into three "Alignments". Forces of Order, Forces of Destruction and Non-Aligned Forces. These aren't actualy morality alignment or anything. Just because something is Order doesn't mean they're good people. Order just means you want the world to go on and you're opposed to Destruction. Destruction means you want either total domination or total destruction. Non-Aligned means you can work with either force, you're flexible.
The system is primarily made so you can deterimne the degree of trust between different armies in "Alliances". If you're from the same alignment, the Alliance is "Trusted Allies". If one of the forces are "Unaligned" then it's "Suspicious Allies". If the alliance is between Order and Destruction, it's "Desperate Allies". If Skaven or Dark Elves are involved it's a "Fragile Alliance" which means the alliance gets weaker with time (specifically with bad rolls). The alignments are:
Forces of Order: Empire, Bretonnia, High Elves, Wood Elves, Dwarves, Lizardmen.
Forces of Destruction: Greenskins, Dark Elves, Vampire Counts, Skaven, Warriors of Chaos, Daemons of Chaos, Beastmen.
Non-Aligned: Tomb Kings and Ogre Kingdoms.
The system is an abstraction, but I don't think it's super reflective of the lore, which makes sense I guess. They wanted to make a system that would be loreful but also balance it out, and they wouldn't be accounting for every single interaction going on. It's the players' job to make a justificaiton for why this force and that force work together.
What puzzles me is Ogre Kingdoms in Non-Aligned but Greenskins in Destruction. The two forces are really not that different at all. The only difference is that the Ogres like eating more than the Greenskins, and Greenskins like fighting more than the Ogres. They're just as likely to fight the Forces of Destruction as the Forces of Order, and they have acted as mercenaries to the Forces of Order occasionally. Do they desire total destruction/total domination? No. If everything is destroyed, that means the Greenskins have nothing to fight. If they have total control, that means they have nothing to fight. Neither option is desirable.