That Khe was quickly reinforced Cause_change_of_strength by the Foreign Legion 's 1st Parachute Battalion ( 1st BEP ) , which parachuted Self_motion in on 17 September .

The 1st BEP waited Temporary_stay at That Khe while a force of French colonial troops , the Moroccan 1st and 11th Tabors , assembled Come_together at Lạng Sơn .

The plan Arranging was that Groupement Bayard would fight Hostile_encounter its way north from That Khe and retake Conquering Dong Khé , holding Conquering it long enough to link up with the Cao Bằng group .

The operation consisted Cause_to_be_included of 64 strike sorties of aircraft from the aircraft carriers and against the torpedo boat bases of Hon Gai , Loc Chao , Quang Khe , and Phuc Loi , and the oil storage depot at Vinh .