During WWII, Mario di Donati served with distinction in the French army, until the day he lost his head and deserted. For the past 15 years he has lived under an assumed name with his partner Germaine. When the latter learns about Mario's secret past, she cannot forgive him and he has no choice but to give himself up to the authorities. In the middle of his trial, Mario runs away again and hides in the apartment of his former mistress, Lilla...

乌兰斯匹格滑稽多智，疾恶如仇，倜傥不羁。其父被西班牙统治者迫害致死，身负血海深仇的他为了民族解放和信仰自由顽强斗争。

An eccentric man (Paul Bernard) endangers himself when he makes advances toward the girlfriend (Suzy Delair) of a saloon keeper (Fernand Ledoux).

影片描绘的是登陆诺曼底的第一天所发生的事件，所谓最长的一天是该片分别从盟军和德军双方面的角度同时描述诺曼第登陆这一历史战役的来龙去脉，以及双方在此期间的重要反应，手法平实，场面逼真，让整个事件在观众眼前重现。并且粗中有细，无论是决策的将军还是登陆的士兵都写得栩栩如生：英军战机低空飞过攻击；美国特种部队遭德军射击；一群法国修女冒着枪林弹雨抢救联军伤兵……备战实况规模之伟大，叫人印象深刻；过程中做出的种种错误决定及各项导致这场历史上其中一场最浩大战争的大小事件，影响深远。

Mr. Scrupule is a mild-mannered smuggler operating on the coast of Nice. If it hadn't been for an unexpected encounter, he'd probably have gone on for a long time in a trade that earned him the esteem of the bourgeoisie. An attractive young woman, Rolande, leads him to new ambitions and soon to dangerous adventures where he risks losing his skin.