The strategy of pushing Self_motion the Việt Minh into attacking Attack well-defended bases in remote parts of the country at the end of their logistical trails was validated Check at the Battle of Nà Sản .

Due Causation to the layout of the theater , special forces would have had to fight Hostile_encounter through of corridor and attack Attack up a well-defended staircase before they could reach Arriving the hall in which the hostages were held Defending .