Sharpe's Eagle (1993) on Netflix

The South Essex regiment arrives in Spain,led by the cowardly,stupid Simmerson with his nephew Gibbons and friend Berry to whom Sharpe takes an instant dislike. Due to Simmerson's incompetence on a mission to blow up an enemy bridge the British standard flag is captured by the French. Simmerson tries to blame Sharpe but Wellesley learns the truth and promotes Sharpe to captain. After Sharpe has caught Berry and Gibbons trying to rape a Spanish girl he challenges them to a duel. Berry accepts but tries to kill Sharpe during a night patrol and is himself killed by Harper. Sharpe and his men pursue the French and succeed in capturing their standard,an eagle belonging to Napoleon.