The best Donald O'Brien’s war movies

As the Allied forces approach Paris in August 1944, German Colonel Von Waldheim is desperate to take all of France's greatest paintings to Germany. He manages to secure a train to transport the valuable art works even as the chaos of retreat descends upon them. The French resistance however wants to stop them from stealing their national treasures but have received orders from London that they are not to be destroyed. The station master, Labiche, is tasked with scheduling the train and making it all happen smoothly but he is also part of a dwindling group of resistance fighters tasked with preventing the theft. He and others stage an elaborate ruse to keep the train from ever leaving French territory.

In June 1940, during the Dunkirk evacuation of Allied troops to England, French sergeant Julien Maillat and his men debate whether to evacuate to Britain or stay and fight the German troops that are closing-in from all directions. - from IMDB

An unusual World War II crime thriller about a Nazi investigation into the murder of a prostitute. Major Grau finds himself focusing on three suspects: the Generals Tanz, Kahlenberg and Seydlitz-Gabler – all three of whom, it seems, are also involved in a plot to kill Hitler

Set in Europe during WWII, a group of American soldiers on their way to military prison are beset upon by a German artillery attack, escaping with Switzerland in their sights. Before making it any farther, they volunteer to steal a V2 warhead for the French Underground - taking them deep into the heart of German territory.