No, or the Vain Glory of Command (1990)
Director:
Manoel de Oliveira    
Writers:
Manoel de Oliveira (dialogue),  P. João Marques (historical text)    
Stars:
Luís Miguel Cintra,  Diogo Dória,  Miguel Guilherme
 
 
Episodes from entire military history of Portugal are told through flashbacks as a professorish soldier recounts them while marching through a Portuguese African colony in 1973. He easily draws his comrades into philosophical musings, and the little contingent suffers badly at the hands of the local military opposition.