Disinformation was seen as an appropriate tool of politics and rhetoric in ancient Greece. Most of all persuasion was used, which then was considered a type of art.
Religion was (and in many ways still is) the best disinformer or manipulator; prophecies were constructed to manipulate the population. The important thing was to use emotions and more than anything else fear as a tool for manipulation. If the oracle of Delphi said a war was to fight and would be won, then the Greek population - because of religious motives - was prepared to fight that war.
Propaganda was not only used in wars but also in daily life to bring people together and create a nation.
But poets, playwrights and other artists were manipulating as well. Their pieces of literature and plays were full of political messages with different ideologies behind. In the way how theatre at that time was part of life, it can be understood easily that those messages had not only entertainment's character but also a lot of political and social influence.
A different and very famous part of disinformation in ancient Greek history was the story of
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General H. Norman Schwarzkopf (* 1934) followed in his father's footsteps at the United States Military Academy at West Point.
In 1965 he applied to join the troops in Vietnam. For the next 20 years Schwarzkopf worked on his career. As Commander in Chief of the U.S. Central Command, he led U.S. and allied forces in the Gulf War (Operations Desert Shield and Desert Storm). He retired from the Army in 1992 and wrote his autobiography.
For a picture see: