 If you liked
Ginga Eiyuu Densetsu
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 ...then you might like
Guin Saga
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Both series deal with an epic saga of war, politics and friendship that span across a large period of time. Although Guin Saga is incomplete (only the first 16 novels of 130+ is animated for now) while LOGH if 110 episodes long with spanning sidestories. Guin Saga is essentially a fantasy version of LOGH, which falls into the category of space opera.