What was John Paul Vann's strategy for turning the war in the United States' favor? How did this differ from the U.S. policy at the time?

John Paul Vann advocated a policy of fomenting social revolution against the Vietcong. This strategy involved going in and converting villages one at a time to resist or not join the VC war efforts, which was a striking difference to the massive military assaults espoused at the time by the U.S. commanders.