In a major shakeup, Egypt’s new president, Mohamed Morsi, has dismissed Cairo’s two top generals: Field Marshal Hussein Tantawi and military Chief of Staff Sami Enan. Tantawi had served as ousted leader Hosni Mubarak’s defense minister for two decades and headed the powerful Supreme Council of the Armed Forces. Tantawi has not yet indicated whether he accepts the moves. To replace him, Morsi appointed General Abdul Fattah el-Sisi, the head of military intelligence. In addition, Morsi quashed the army’s recent constitutional declaration that had curbed the new leader’s powers. Thousands have gathered in Tahrir Square to support the overhaul. In a speech, Morsi said the moves are for “the benefit of this nation.”