Hosni Mubarak hit 90% of their targets, making Mubarak a national hero. The next year he was promoted to Air Chief Marshal in recognition of service during the October War of 1973 against Israel. Mubarak was credited in some publications for Egypt's initial strong performance in the war. The Egyptian analyst Mohamed Hassanein Heikal said the Air Force played a mostly psychological role in the war, providing an inspirational sight for the Egyptian ground troops who carried out the crossing of the Suez Canal, rather than for any military necessity. However Mubarak's influence was also disputed by Shahdan El-Shazli, the daughter of
Muslim Brotherhood in Egypt more radical Qutb-inspired Islamist groups blossomed, and after Sadat signed a peace agreement with Israel in 1979, the Muslim Brotherhood became confirmed enemies of Sadat. Sadat was assassinated by a violent Islamist group Tanzim al-Jihad on 6 October 1981, shortly after he had Brotherhood leaders (and many other opposition leaders) arrested. Again with a new president, (Hosni Mubarak), Brotherhood leaders (Supreme Guide Umar al-Tilmisani and others) were released from prison. Mubarak cracked down hard against radical Islamists but offered an "olive branch" to the more moderate Brethren. The brethren reciprocated, going so far as to endorse Mubarak's candidacy for president