Ginga Eiyuu Densetsu: Arata Naru Tatakai no Overture

Based on a series of sci-fi novels, this series tells the story of a massive conflict between the Prussia-like Galactic Empire and the Free Planets Alliance. It describes all levels of the war, from the tactical to the strategic, but focuses most on the two opposing militaries' leaders: Reinhard Von Lohengramm and Yang Wen-Li. (Source: AniDB)