Pokemon Conquest for the DS. Comes out in the US on 6-18-12. It's developed by Koei. It's basically Pokemon meets Nobunga's Ambition. You have to collect Pokemon AND collect commanders.
http://www.rpgamer.com/games/pokemon/pokenobu/pokenobuimp.html
I must say.... this game looks awesome.
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Yay - SuperNiceDog is the guru champion of awesomeness.