This Los Angeles Times article on psychological operations used in Fellujah is worth reading. Just note the start of the piece: On the evening of Oct. 14, a young Marine spokesman near Fallouja appeared on CNN and made a dramatic announcement.
"Troops crossed the line of departure," 1st Lt. Lyle Gilbert declared, using a common military expression signaling the start of a major campaign. "Its going to be a long night." CNN, which had been alerted to expect a major news development, reported that the long-awaited offensive to retake the Iraqi city of Fallouja had begun.
In fact, the Fallouja offensive would not kick off for another three weeks. Gilberts carefully worded announcement was an elaborate psychological operation — or "psy-op" — intended to dupe insurgents in Fallouja and allow U.S. commanders to see how guerrillas would react if they believed U.S. troops were entering the city, according to several Pentagon officials.