Revolutionary leader...: Revolutionary leader President Ho Chi Minh (C) talks with Poliburo members before starting Dien Bien Phu campaign in 1954. The fighting began March 13th, 1954 and 56 days later, French troops hoisted the white flag to signal the end to one of the greatest battles of the 20th century. Vietnam marks 07 May the 50th anniversary of the victory of Dien Bien Phu over French troops in 1954. KTS Photo/ VNA /KTS