I watched it as a young kid so it had to be an early or mid 80's movie. World War I era. North Africans fighting for freedom from a European power. An older man leads the North Africans and I think he dies in the end.
The one scene I really remember is the European power is sending an armed force across a iron/steel bridge and the freedom fighters are camped out above in caves. They attack the forces on the bridge. I can not remember if they blow up the bridge or not.