This is a Hollywood movie made in the middle of World War II. It's a very good portrayal of British and French undercover work during the war, as well as of the French underground. To its credit, it also shows the betrayal of some of the French, including a double agent and traitors among the underground.
The French underground contributed to the Allied efforts against Germany in WW II. But the country also saw a significant collaboration with the Nazis, in the Vichy government, socializing with the Germans, and spies and double agents in the underground.
At the time "Assignment in Brittany" was being made, Germany's blockade of the Atlantic was in place. By the end of 1943, when it had ended - due to loss of ships and air support, the Germans had sunk 3,500 merchant ships enroute to the United Kingdom and Russia. Some 175 Allied war ships also had been sunk. Germany lost 783 U-boats and 47 surface ships.
There wasn't a specific U-boat base on the coast of France that had to be knocked out, as this movie shows. Rather, Allied bombing raids hit several ports from which U-boats operated. But, most of the U-boat losses were from Allied aircraft and convoy escort ships. The Atlantic battle was one of attrition in which the Allies outlasted the Germans with superior naval power combined with a blockade of Germany from its Baltic Sea ports.
This film has some good action toward the end. But its best aspect is the portrayal of the French underground and people during the German occupation. The story is an interesting one. Considering that MGM had to shoot the movie on its Hollywood studios, the film has a realistic feel as though it's taking place in Brittany France during the war.
The cast all do a fine job and the film quality and production are good. This was the American film debut of both Jean-Pierre Aumont and Signe Hasso. He is Capt. Pierre Metard in the French Army, and goes undercover back into France as a look-alike, Bertrand Corlay. His duty is to pinpoint the hidden German U-boat base so that the Allies can attack and destroy it. The story has an element of romance, but not the obviously usual type that Hollywood inserts to increase appeal for a film.
Here are a couple of interesting lines from the movie. Corlay and a schoolteacher, Jean Kerenor (played by Richard Whorf) are going into the town pub when a German guard stops them. Kerenor says, "One uncovers. It's good form for the content." They take their hats off and enter, where town men and German officers are seated at tables. But all others are wearing their hats.
To Metard, who impersonates her son, Madame Henriette Corlay says, "There are women, monsieur, who give their love but once. I think Ann's one of them. When you go..." Capt. Metard, "It's not I she loves... it's your son." Mme. Corlay, "I don't think you believe that. Monsieur, don't make her suffer any more."
