Final answer:
The World War I-era poster aimed to persuade Americans to contribute to the war effort, emphasizing patriotism and national unity.
Step-by-step explanation:
This World War I-era poster was intended to persuade American citizens to support the war effort. During both World War I and World War II, propaganda was used to stir patriotism and encourage actions such as buying war bonds, joining the military, and supporting the war effort in other capacities.
Posters like those described, depicting infantrymen in action, women in various roles, and the Soviet Union's push for peace, were designed to shape public opinion and garner support for the war efforts at home and abroad. These posters conveyed messages of unity, strength, and moral duty, showcasing the all-encompassing nature of national wartime campaigns.