The Eagle does many things right, especially in the first third of the film. The sets and costumes are high-quality, and the film is beautifully shot in Hungary and the Scottish highlands. Eschewing computer-generated effects, The Eagle does a good job of depicting the brutality of ancient warfare, though the editing during the battle scenes is a bit choppy. The film also illustrates the strategic and technological advantages that helped the Romans win so many battles, as well as the obsessive, almost religious militarism that enabled the Empire’s spread and drives Marcus’ quest.
Source: Jonathan Kim: ReThink Review: The Eagle — Slavery Before Dishonor?