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You're a peaceful alien from planet Zethra. Your mission on Earth is to make people stop killing each other and to teach them to live in peace and harmony. After years of studying human psychology and physiology, your nation has created a device that turns aggressive humans into pacifists! Your flying saucer is equipped with 3 devices of such kind. Abduct soldiers on the battle field and release them once they are turned into pacifists. Remember that pacifists are humans too and can be killed by a random bullet.