 If you liked
Gankutsuou
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 ...then you might like
Arslan Senki (TV)
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"Gankutsuou: The Count of Monte Cristo" and "The Heroic Legend of Arslan" / "Arslan Senki" both involve a young and naïve male protagonist of high birth who lives in his powerful father's shadows.
In both these shows, military campaigns are given a relatively heavy focus as the background in order to set the premise.