psychological warfare• A portable sound system blaredmilitary marches, part of a continuing campaign of psychological warfare.• Secrecy was out of the question; it would riot have been psychological warfare.• As a last resort he decided to take a leaf out of the Oriental's book, by using psychological warfare against him.• During the war he worked in psychological warfare, and doubtless learnt many of his more infuriatingtricks of debating and persuasion.• Like the military machinery, the psychological warfare gets ever more sophisticated.• Fred made up for his lack of inches by wagingpsychological warfare in the form of a relentlessmonologue.• But no one was better equipped for the psychological warfare that lay ahead.