Nhu summoned 7 of the 10 generals to Gia Long Palace on August 20 for consultations. They presented their request for martial law and discussed how to disband the groups of monks and their supporters from the temples in Saigon. Nhu sent the generals to see Diem. The president listened to the group of seven, led by General Trần Văn Đôn. The group also included Army Chief General Trần Thiện Khiêm and General Nguyễn Khánh, commander of the II Corps in the Central Highlands. Khiêm and Khánh were two of the officers who were responsible for helping to put down the attempted coup against Diệm in 1960. Also present was Đôn's brother-in-law, General Đỗ Cao Trí, commander of I Corps, which oversaw the northernmost region around Huế, and General Lê Văn Kim, head of the military academy. Trí and Kim were favorites of the Diệm regime. General Tôn Thất Đính, a brash paratrooper, who was also South Vietnam's youngest-ever general, commanded the III Corps surrounding Saigon. General Huỳnh Văn Cao was the commander of the IV Corps in the Mekong Delta and the only one of the septet who would prove not to have been involved in the later plotting against Diệm. Đính and Cao controlled the two corps regions closest to Saigon and therefore the two areas most crucial in the success or failure of a coup. Cao had used the Seventh Division of his IV Corps to storm the capital in 1960 to save Diệm.