What was one of the central themes of war propaganda during World War I?

One of the central themes of war propaganda during World War I was promoting enlistment and support for the war. Governments used propaganda to motivate citizens to join the military and contribute to the war effort, emphasizing themes of patriotism, duty, and sacrifice. Posters, films, speeches, and other forms of media portrayed war as a noble endeavor where young men were called to defend their country against threats, mobilizing public sentiment to support military actions and to participate in the workforce in any capacity that aided the war. This collective rallying encouraged not just enlistment but also broader support for various initiatives, including purchasing war bonds and conserving resources.