sentences:  General Salan used the Hanoi-based French Air Force Dakotas to transport troops and material there in order to complete a fortified "base aero-terrestre" or air-land base allowing a direct confrontation with the Việt Minh divisions.During the battle, Colonel Gilles used a new tactic, called "the hedgehog" ("le hérisson"), for the first time in Indochina.The hedgehog defense consisted of an outpost surrounded by several armed positions ("point d'appui" or "P.A.