Read the paragraph from the text: "During World War I, while serving as a Red Cross ambulance driver, Walt Disney embellished his ambulance and other vehicles with drawings and cartoon figures. Thus, he came to appreciate the importance of humorous insignia to unit morale and esprit-de-corps. It is not surprising, therefore, that during World War II Disney artists often used their talents to design military insignia and emblems." Based on this information, what can you infer about the effect of the insignia and emblems designed by Disney artists during World War II?