The screen explodes with action in this war-torn drama. Henry Fonda stars as the passionate, courageous Marco, a peasant farmer determined to protect his land from invading soldiers. The gorgeous Madeleine Carroll is Norma, the daredevil spy whose heart he captures. With gunfire thundering around them, they struggle against a powerful enemy blockade that is preventing the delivery of desperately needed food in a fiery battle that could change the course of the war.
With its focus on the Spanish Civil War (1936-39) Blockade bravely tacked a subject that most of Hollywood had refused to touch and, between the lines, dared to challenge the public to confront the growing Nazi threat.