Đình was put in charge of the fake coup and was allowed the additional control of the 7th Division based in Mỹ Tho, south of the capital, which was previously assigned to Diệm loyalist General Huỳnh Văn Cao, who was in charge of the IV Corps in the Mekong Delta. The reassignment of the 7th Division to Đính gave his III Corps complete encirclement of Saigon. The encirclement would prevent Cao from storming the capital to save Diệm as he had done during the 1960 coup attempt.