This illustration appeared in the September 1942 issue of Coronet magazine. Disney artist Hank Porter created this piece and the art is one of my favorite Disney wartime images. The legend identified the characters as follows:
A Bambi Squirrel represents the importance of food in winning the war. (Coincidentally Disney released a film titled Food Will Win the War in the summer of 1942)
Donald Duck as a Marine leads the parade. He symbolizes the adage that today the pen is equal to the sword. Flower is a member of the Chemical Warfare Service. Thumper is a member of the Signal Corps. Owl is an officer in the Army's Communications Section. The fighting spirit of the U.S. eagle represents the nation's mood. Dopey does his bit by buying war bonds. Two of the Three Little Pigs shoulder their muskets as members of the Home Guard. Practical Pig carries the tools of industry into battle. Minnie Mouse is a member of the Red Cross. Bambi is a member of the Radio Section. Doc is a member of the Medical Corps. Mickey Mouse heads the Tank Corps. The Flying Tiger and Mosquito Fleet insignia were designed by Disney artists.