
In this WWII propaganda allegory, a group of mice living in a house face their constant nemesis, a cat who represents the Axis powers. One naive mouse, attempting to practice appeasement, makes a deal with the cat to receive regular cheese rations in exchange for not resisting his predatory advances. This collaborationist mouse convinces his fellow mice that cooperation with their enemy is the path to safety and prosperity. However, the cat's true intentions are revealed when he systematically betrays the mice and attempts to capture them all. The remaining mice must unite and fight back against the cat, learning that appeasement only emboldens aggressors and that unity and resistance are necessary for survival against tyranny.

This Merrie Melodies cartoon was produced during the height of World War II as part of Warner Bros.' contribution to the war effort through propaganda animation. The studio operated under government guidelines for wartime content, with many of their top animators including Friz Freleng contributing to the cause. The animation team worked under tight deadlines and resource constraints due to wartime rationing of materials. The short was produced using traditional cel animation techniques with backgrounds painted on cardboard due to material shortages.
Released in March 1943, 'Fifth Column Mouse' was created during a pivotal year in World War II when the tide was beginning to turn in favor of the Allies. The cartoon emerged from Hollywood's extensive involvement in wartime propaganda efforts, with the U.S. government actively encouraging film studios to produce content that would boost morale and educate the public about the war effort. The concept of the 'fifth column' was particularly relevant in 1943, as fears of enemy sympathizers and saboteurs on American soil were widespread. The cartoon's message about the dangers of appeasement reflected recent historical memory of how the policy of appeasement toward Nazi Germany in the 1930s had failed to prevent war. Warner Bros., under the leadership of Jack Warner, was one of the most patriotic Hollywood studios, with many of its employees, including animators, serving in the military or contributing to war-related projects.
'Fifth Column Mouse' represents an important example of how animation was used as a tool for political persuasion and social education during WWII. The cartoon contributed to the broader cultural narrative that framed the war as a clear moral struggle between good and evil, helping to galvanize public support for the war effort. It demonstrates how popular entertainment could be effectively repurposed for propaganda while maintaining its entertainment value. The film is part of a significant body of work that shows how Warner Bros. animation studio matured from purely entertainment-focused content to socially conscious messaging. The cartoon's use of animal characters to represent complex geopolitical concepts made these ideas accessible to audiences of all ages, including children who might not otherwise understand wartime politics. This approach influenced how future generations would use animation for educational and persuasive purposes.
The production of 'Fifth Column Mouse' took place during a critical period in American animation history when studios were mobilized for the war effort. Friz Freleng, already an established director at Warner Bros., was tasked with creating entertaining yet educational content that would support the war message. The animation team worked with the Office of War Information to ensure the propaganda message was clear and effective. The story development process involved multiple revisions to balance the political message with Warner Bros.' signature humor and entertainment value. The voice recording sessions with Mel Blanc were particularly efficient, as he could voice multiple characters in quick succession. The animation team faced challenges with wartime material shortages, forcing them to be creative with their resources while maintaining the high quality Warner Bros. cartoons were known for.
The visual style of 'Fifth Column Mouse' exemplifies the sophisticated animation techniques that Warner Bros. had perfected by the early 1940s. The short features dynamic camera angles and fluid character movements that enhance both the comedy and the dramatic tension. The background art uses rich, detailed designs that create a convincing domestic environment while allowing for clear staging of the action. The color palette employs warm, saturated tones typical of Technicolor animation of the era, with careful attention paid to how colors support the emotional tone of each scene. The animation team used squash and stretch techniques to exaggerate the characters' movements for comedic effect while maintaining believable physics. The visual storytelling relies heavily on character expressions and body language to convey the political allegory without needing extensive dialogue.
While 'Fifth Column Mouse' didn't introduce groundbreaking new techniques, it demonstrated the technical excellence that Warner Bros. animation had achieved by 1943. The short showcases advanced character animation that gives the mice and cat distinct personalities through movement and expression. The film features smooth multiplane camera effects that create depth in certain scenes, though this technique was used more sparingly at Warner Bros. than at Disney. The synchronization between animation and soundtrack represents the peak of the studio's musical timing capabilities. The color work demonstrates sophisticated understanding of how to use Technicolor to enhance storytelling and emotional impact. The technical team managed to maintain high production quality despite wartime resource constraints, showing their adaptability and technical expertise.
The musical score for 'Fifth Column Mouse' was composed by Carl Stalling, Warner Bros.' legendary music director who was responsible for the soundtracks of most classic Looney Tunes and Merrie Melodies cartoons. Stalling incorporated popular wartime songs and patriotic melodies into the score, using them ironically to comment on the action. The soundtrack features the studio's orchestra performing with the energetic, synchronized style that characterized Warner Bros. cartoons of this period. Stalling famously used musical quotations from classical compositions and contemporary hits to enhance the storytelling and add layers of meaning. The sound effects, created by Treg Brown, complement the visual comedy with exaggerated, cartoonish noises that became hallmarks of the Warner Bros. style. The audio mix balances dialogue, music, and effects to create the rich sonic environment that made these cartoons so distinctive.
'We must appease the cat! It's the only way to get cheese!' - Appeasement Mouse
'You can't trust a cat, no matter how much cheese he promises!' - Wise Mouse
'A divided mouse colony is a conquered mouse colony!' - Resistance Leader Mouse
'Some mice will learn that cooperation with the enemy only leads to the cheese trap!' - Narrator
Contemporary reviews in 1943 praised the cartoon for its clever use of allegory and its timely patriotic message. The Hollywood Reporter noted that 'Fifth Column Mouse' 'effectively combines entertainment with education' and called it 'another fine example of Warner Bros.' contribution to the war effort.' Variety complimented the animation quality and the 'sharp political satire' that managed to be both humorous and serious. Modern animation historians have recognized the short as an exemplary piece of wartime propaganda, with scholars like Leonard Maltin noting how effectively it conveyed its message without being overly preachy. The cartoon is often cited in academic studies of wartime animation as demonstrating how popular culture can reflect and shape public opinion during times of crisis.
The cartoon was well-received by wartime audiences who appreciated both its entertainment value and its patriotic message. Movie theater audiences responded positively to the clear moral lesson about the dangers of appeasement, which resonated with contemporary concerns about the war effort. Children particularly enjoyed the cat-and-mouse action while absorbing the underlying message about standing up to bullies and tyrants. The short became part of the broader Warner Bros. cartoon catalog that audiences expected and enjoyed during their theater visits. In the years following WWII, the cartoon continued to be shown in theaters and later on television, though its specific wartime message became less immediately relevant to post-war audiences. Modern viewers and animation enthusiasts appreciate the short as both a historical artifact and an example of classic Warner Bros. animation at its peak.
The film is preserved in the Warner Bros. film archive and has been digitally restored as part of the Looney Tunes Golden Collection. The original nitrate negatives have been transferred to safety film and the cartoon is available in high definition. The short is included in the Warner Bros. library and has been released on various home video collections. The preservation status is excellent, with multiple copies and formats maintained by Warner Bros. and animation archives.