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In page The Good, the Bad and the Ugly:

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Many critics have also noticed the film's anti-war theme.[4][5] Taking place in the American Civil War, the film takes the viewpoint of people such as civilians, bandits, and most notably soldiers, and presents their daily hardships during the war. This is seen in the film's rugged and rough aesthetic. The film has an air of dirtiness that can be attributed to the Civil War and in turn, it affects the actions of people, showing how the war deep down has affected the lives of many people. A scene in the extended version presents Angel Eyes arriving in an embattled Confederate outpost. Angel Eyes shows compassion towards the agonising soldiers, pointing out that even 'The Bad' is shocked by the horrors of the war.[citation needed]