Germany was the first country to establish a Ministry of Propaganda in 1917, headed by Adolf Hitler.

The main purpose of propaganda during World War I was to boost morale and support for the war effort among the civilian population.

Pacifism, which is the opposition to war, was not a common theme in World War I propaganda.

The British propaganda poster "Lord Kitchener Wants You" was created by Alfred Leete in 1914 and became one of the most iconic images of the war.

Woodrow Wilson established the Committee on Public Information (CPI) in 1917 to coordinate propaganda efforts during World War I.

The German propaganda film "The Sinking of the Lusitania" was released in 1918 and aimed to justify the sinking of the British passenger liner RMS Lusitania.

The United Kingdom used propaganda to encourage women to take on traditionally male roles in the workforce during World War I, such as working in factories and munitions plants.

The American propaganda poster "I Want You for U.S. Army" was created by James Montgomery Flagg in 1917 and became one of the most iconic images of the war.

Germany used propaganda to spread rumors about the enemy using inhumane weapons, such as poison gas and dum-dum bullets, in order to demonize the enemy and justify its own actions.

The British propaganda poster "Do Your Bit" was created by Savile Lumley in 1915 and encouraged people to contribute to the war effort in whatever way they could.

The United Kingdom used propaganda to encourage people to conserve food and other resources during World War I, such as by rationing food and promoting the use of substitutes.

The American propaganda film "The Sinking of the U-35" was released in 1918 and aimed to boost morale by depicting the sinking of a German submarine.

Germany used propaganda to spread rumors about the enemy committing atrocities against civilians, such as the Rape of Belgium, in order to demonize the enemy and justify its own actions.

The British propaganda poster "For King and Country" was created by Savile Lumley in 1915 and encouraged people to join the war effort in support of the king and country.

The United States used propaganda to encourage people to buy war bonds to help finance the war effort, such as by creating posters and advertisements that appealed to patriotism and the desire to support the troops.