 If you liked
Kaze wo Mita Shounen
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 ...then you might like
Fullmetal Alchemist: Brotherhood
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Similar alternate world time line involving technology, weapons, and a despotic dictator. Both feel like they are set somewhere just prior to WWII and have a bit of a "steampunk" feel. There is even a parallel with the young boy with special powers others want to use. Both are excellent.