During World War I and II, propaganda played a crucial role in shaping public perception and mobilizing support for the war efforts. Governments used propaganda to promote national unity, boost morale, and demonize the enemy. In both wars, various media, including posters, films, and newspapers, were employed to convey messages that encouraged enlistment, supported wartime production, and rationed resources. Additionally, propaganda was used to spread disinformation and influence public opinion about critical issues such as military strategy and the justification for the wars. The overall effectiveness of these campaigns significantly impacted wartime and postwar societies.