This type of psychological warfare device--the use of unfamiliar instruments to excite panic--is common in the history of all ancient countries. In China, the Emperor-usurper Wang Mang on one occasion tried to destroy the Hunnish tribes with an army that included heavy detachments of military sorcerers, even though the Han Military Emperor had found orthodox methods the most reliable; Wang Mang got whipped at this. But he was an incurable innovator and in 23 A.D., while trying to put down some highly successful rebels, he collected all the animals out of the Imperial menagerie and sent them along to scare the enemy: tigers, rhinoceri, and elephants were included. The rebels hit first, killing the Imperial General Wang Sun, and in the excitement the animals got loose in the Imperial army where they panicked the men. A hurricane which happened to be raging at the same time enhanced the excitement. Not only were the Imperial troops defeated, but the military propaganda of the rebels was so jubilant in tone and so successful in effect that the standard propaganda theme, "Depress and unnerve the enemy commander," was fulfilled almost to excess on Wang Mang. Here is what happened to him after he noted the progress of the enemy: "A profound melancholy fell upon the Emperor. It undermined his health. He drank to excess, ate nothing but oysters, and let everything happen by chance. Unable to stretch out, he slept sitting up on a bench."[3] Wang Mang was killed in the same year, and China remained without another economic new deal until the time of Wang An-shih (A.D. 1021-1086), a thousand years later. Better psychological warfare would have changed history. =Field Propaganda Of The Athenians And The Han.= A more successful application of psychological warfare is recorded in the writings of Herodotus, the Greek historian: Themistocles, having selected the best sailing ships of the Athenians, went to the place where there was water fit for drinking, and engraved upon the stones inscriptions, which the Ionians, upon arriving the next day at Artemisium, read. The inscriptions were to this effect, 'Men of Ionia, you do wrong in fighting against your fathers and helping to enslave Greece. Rather, therefore, come over to us or if you cannot do that, withdraw your forces from the contest and entreat the Carians to do the same. But if neither of these things is possible, and you are bound by too strong a necessity, yet in action, when we are engaged, behave ill on purpose, remembering that you are descended from us and that the enmity of the barbarians against us originally sprang from you.'[4]