territorial integrity and political independence to the regular military (artesh), while it gave the Pasdaran the responsibility of preserving the Revolution itself. Days after Ayatollah Ruhollah Khomeini's return to Tehran on 1 February 1979, Mehdi Bazargan's interim administration established the Pasdaran under a decree issued by Khomeini on 5 May. The Pasdaran was intended to protect the Revolution and to assist the ruling clerics in the day-to-day enforcement of the new government's Islamic codes and morality. There were other, perhaps more important, reasons for establishing the Pasdaran. The Revolution needed to rely on a force of its own rather than borrowing the previous regime's tainted units. As one of the first revolutionary institutions, the Pasdaran helped legitimize the Revolution and gave the new government an armed basis of support. Moreover, the establishment of the Pasdaran served notice to both the population and the regular armed forces that the Khomeini government was quickly developing its own enforcement body. Thus, the Pasdaran, along with its political counterpart, Crusade for Reconstruction, brought a new order to Iran. In time, the Pasdaran would rival the police and the judiciary in terms of its functions. Although the IRGC operated independently of the regular armed forces, it was often considered to be a military force in its own right due to its important role in Iranian defense. The IRGC consists of ground, naval, and aviation troops, which parallel the structure of the regular military. The Pasdaran was "given control of Iran’s ballistic missile program in both missile employment and development. Also contained under the umbrella of the more conventional Pasdaran, were the Basij Forces (Mobilization Resistance Force), a network of potentially up to a million active individuals who could be called upon in times of need. The Basij could be committed to assist in the defense of the country against internal or external threats, but by 2008 had also been deployed in mobilizing voters in elections and alleged tampering during such activities. Another element was the Quds Force, a special forces element tasked with unconventional warfare roles and known to be involved in providing assistance and training to various militant organizations around the world. The Pasdaran is closely associated with Supreme Leader Khomeini who came to power in 1989, and used the Pasdaran to build support. Reportedly he reached "far down into the ranks and appointed new colonels and brigadiers. 'Khamenei micromanages the whole system, so