Horatio Hornblower: The Wrong War (1999)

Hornblower is called to take a company of British troops (which the sailors call lobsters because of their red coats) and a company of French nationalists to France to fight in the revolution. But Hornblower is horrified by the brutality of the French commander as he guillotines everyone in a village that destroyed his former home and his unwillingness to take part in the actual battles. However, when the commander and his men set out to rape and brutalize a young school teacher, Hornblower vows his protection of her.