Well, you shouldn't forget this movie was made under Franco's dictatorship, in its deepest years, so it's a very imperialist exaltation movie. OK. But if you can take this consideration apart (which must be difficult, I know) you'll find a powerful piece of cinema, an Spanish classic, with a neat story based on a very dramatic episode of Spanish history. The story of a handful of soldiers who didn't want to be in this war, but had to, and perform a highly heroic and surrealistic defense of a site is told powerfully. Also, is a catalog of the Spanish male actors of those years. Almost archaeological, but interesting.
Review of Los últimos de Filipinas
