Oi .... #48Ridley Scott's debut film , set in the Napoleonic era; The Duellists.
Made in 1977 for virtually nothing, is visually sumptuous and has a superb cast. It is based upon a Joseph Conrad story of two French cavalry officers who duel continually (one reluctantly and the other one psychotically) over the course of the Napoleonic Wars.
I'm not going to give you the ending except neither die and one wishes he was dead...