Ministry of Defence (Pakistan) of the army, navy and air force in Pakistan until 1956. In December 1959, the federal capital shifted temporarily to Rawalpindi, while plans for Islamabad were drawn up by then-General Ayub Khan's military government. The proximity of the Army Headquarters in Rawalpindi played a major role in the decision to relocate the capital. In March 1972, President Zulfiqar Ali Bhutto in response to criticism over the difficulties in inter-service coordination in previous wars decreed that all service HQs were to move to Islamabad. The Navy was the first to comply, with Naval Headquarters moving from Karachi to Sector E9 Islamabad
International School of Islamabad 165 students in January 2003, an all-time low, but enrollment recovered to 374 in 2007–2008. Enrollment declined after 2008. After the Islamabad Marriott Hotel bombing in October of that year, the United Nations and other organizations stated that Islamabad was not a family post, meaning employees of those organizations may not have their family members in the same city. Additional events in Pakistan and neighboring countries caused additional enrollment declines. Each year, 30% of the school's students are new students. Enrollment count: International School of Islamabad International School of Islamabad (ISOI) is an international school in Islamabad, Pakistan, serving K-12.