Discuss Robert development throughout the novel. Do you see Robert as “static” or “dynamic”?

I think that Robert is a dynamic character. Initially he is passionate about the Republic. He has, however, come to the realization that most of the people of Spain have, like him, become disillusioned about their noble cause and so are not as willing to sacrifice themselves to it. As a result, he no longer defines himself as a communist; now he insists instead that he is an "anti-fascist," not a firm supporter of a cause but at least a dissenter to a movement he finds abhorrent.

His sense of duty compels him to complete the task he has taken on—the blowing up of a bridge in Fascist territory in an effort to aid the Loyalists' advance—even when he understands the probability of failure and the danger to himself and others. His courage, evident throughout the novel as he carries out his perilous mission, faces its greatest test after the mission fails to impede the Fascist movements and he suffers a severe injury when his horse stumbles. Understanding that his injuries will slow the others' escape, he convinces them to go on ahead to safety without him. He quickly overcomes his desire to kill himself and determines to face the oncoming Fascist forces in a last effort to help his comrades escape.