sentences:  Đính was put in charge of the fake coup and was allowed the additional control of the 7th Division based in Mỹ Tho, which was previously assigned to Diệm loyalist Cao, who commanded the IV Corps in the Mekong Delta.The reassignment of the 7th Division gave Đính and his III Corps complete encirclement of Saigon, and would prevent Cao from storming the capital to save Diệm as he had done during the coup attempt in 1960.Nhu and Tung, however, were unaware that Đính was part of the real coup plot.