WWII. This may be the most impressive single copy...

Mariana News 2523
The United States proves to the Japanese that it has the Atomic Bomb

After the bombing of Hiroshima the Japanese government argued about whether it was an actual atomic bomb that destroyed the city.

 The Japanese decided to fight on. Thousands of lives were in jeopardy. The leaflet-newspaper was prepared to show the Japanese an aerial photograph as proof.

 The Mariana News was printed to give the Japanese homeland true news of Allied progress on all fronts. It was printed as a single sheet, 8 x 11-inches in size.

This may be the most impressive single copy of the newspaper because it depicts the atomic bombing of Hiroshima. This leaflet-newspaper was produced by the OWI on Saipan.

The fact sheet on the leaflet mentions some of the text and themes:

Japan's militarists reject peace terms. President Truman announces dropping an atomic bomb on Hiroshima. Truman declares bomb only used when Japanese military leaders rejected Potsdam peace terms. 

We should mention that in order to force Japanese action on the peace process, 5,500,000 copies of OWI leaflet 2107 were dropped on Japan on 31 July 1945. It informed the Japanese of the text of the Potsdam Declaration. This was considered one of the most important aerial leaflets of WWII.

OWI leaflet 2114 informed the Japanese of the new atomic bomb. It said in part:

Sixteen hours ago an American airplane dropped one bomb on Hiroshima, an important Japanese army base.

 That bomb had more power than 20,000 tons of TNT. It has more than 2000 times the blast power of the 11-ton British "grand-slam" which is the largest bomb ever yet used in the history of warfare... It is an atomic bomb. It is a harnessing of the basic power of the universe. The force from which the sun draws its power. 

Aerial photographs are very important. They can be used for good or evil. They can terrorize an enemy or be used to convince that enemy to cease resistance and live. They can be used to flood the road with civilians to stop enemy military movements or to show enemy civilians the way to safety. They can be used to convince neutral nations of a neighbor's evil intent.

In this short article we have attempted to depict the use of aerial photographs on propaganda leaflets as a psychological warfare theme. If used honestly and truthfully they can be very powerful. An enemy soldier that has been told he is winning the war can be severely demoralized by a photograph of his home town razed to the ground by bombers. This is a propaganda theme that will be used again in the future.

The side that owns the air will usually win the war. It has the ability to bomb with impunity and then is able to show the enemy the terrible results of that bombing.

SOURCE,
https://www.psywar.org