Disney's characters weren't just used for entertainment. They were an important part of the war effort. In 1941, Disney was asked to use some of its studios to defend airplane factories against air raids, and soon after were asked to help with war propaganda. Donald Duck helped start raising awareness for the war effort in cartoons such as "The Spirit of '43," and "Der Fuehrer's Face." Other characters were also featured in cartoons, such as Mickey & Minnie Mouse, Dumbo, Goofy, and Bambi. Disney was now producing five times more film than they ever had before making war cartoons. Even comics featured these characters, and had Americans laughing at their own daily lives.