This is good Hemingway. It has some of the tenderness of A Farewell to Arms and some of its amazing power to make one feel inside the picture of a nation at war, of the people experiencing war shorn of its glamor, of the emotions that the effects ofwar - rather than war itself - arouse. But in style and tempo and impact, there is greater resemblance to The Sun Also Rises. Implicit in the characters and the story is the whole tragic lesson of Spain's Civil War, proving ground for today's holocaust, and carrying in its small compass, the contradictions, the human frailties, the heroism and idealism and shortcomings. In retrospect the thread of the story itself is slight. Three days, during which time a young American, a professor who has taken his Sabbatical year from the University of Montana to play his part in the struggle for Loyalist Spain and democracy. He is sent to a guerilla camp of partisans within the Fascist lines to blow up a strategic bridge.