Iran

the Islamic Revolutionary Guard Corps (IRGC) was formed in May 1979 in the immediate aftermath of Shah Mohammad Reza PAHLAVI’s fall, as leftists, nationalists, and Islamists jockeyed for power; while the interim prime minister controlled the government and state institutions, such as the Army, followers of Ayatollah Ruhollah KHOMEINI organized counterweights, including the IRGC, to protect the Islamic revolution; the IRGC’s command structure bypassed the elected president and went directly to KHOMEINI; the IRGC played a critical role in helping KHOMEINI consolidate power in the aftermath of the 1979 revolution, and it ensured that KHOMEINI's Islamic revolutionary vision prevailed against domestic challenges from nationalists and leftist factions in the scramble for control after the Shah's departure the Iran-Iraq War (1980–88) transformed the IRGC into more of a conventional fighting force with its own ground, air, naval, and special forces, plus control over Iran’s strategic missile and rocket forces; today, the IRGC is a highly institutionalized and parallel military force to Iran’s regular armed forces (Artesh); it is involved in internal security and has influence in the political and economic spheres of Iranian society, as well as Iran’s foreign policy; on the economic front, it owns factories and corporations and subsidiaries in banking, infrastructure, housing, airlines, tourism and other sectors; its special operations forces, known as the Qods/Quds Force, specialize in foreign missions and have provided advice, funding, guidance, material support, training, and weapons to militants in countries such as Afghanistan, Iraq, Syria, and Yemen, as well as extremist groups, including HAMAS, Hizballah, Kata’ib Hizballah, and Palestine Islamic Jihad; the Qods Force also conducts intelligence and reconnaissance operations; note - both the IRGC and the Qods Force have been designated as foreign terrorist organizations by the US (see Terrorist Organizations under References) the Supreme Council for National Security (SCNS) is the senior-most body for formulating Iran’s foreign and security policy; it is formally chaired by the president, who also appoints the SCNS secretary; its members include the speaker of the Majles, the head of the judiciary, the chief of the Armed Forces General Staff (chief of defense or CHOD), the commanders of the Artesh (regular forces) and IRGC, and the ministers of defense, foreign affairs, interior, and intelligence; the SCNS reports to the supreme leader; the supreme leader is the commander-in-chief of the armed forces the Iranian Armed Forces are divided between the regular forces (Artesh) and the IRGC; the Artesh primarily focuses on defending Iran’s borders and territorial waters from external threats, while the IRGC has a broader mission to defend the Iranian revolution from any foreign or domestic threat; in 1989, Iran established the Armed Forces General Staff to coordinate military action across both the Artesh and the IRGC; Iran also has a joint military headquarters, the Khatam ol-Anbia Central Headquarters, to command the Artesh and IRGC in wartime (2024)

note: Iran maintained a military presence in Syria and recruited, trained, and funded thousands of Syrian and foreign fighters to support the ASAD regime during the Syrian civil war (2011-December 2024)

the military forces of Iran are divided between the Islamic Republic of Iran Regular Forces (Artesh) and the Islamic Revolutionary Guard Corps (IRGC or Sepah): Artesh: Ground Forces, Navy (includes marines), Air Force, Air Defense Forces IRGC: Ground Forces, Navy (includes marines), Aerospace Force (controls strategic missile force), Qods Force (aka Quds Force; special operations), Cyber Electronic Command, Basij Paramilitary Forces Ministry of Interior: Law Enforcement Command (FARAJA) Ministry of Intelligence and Security (2025)

note 1: the Artesh primarily focuses on defending Iran’s borders and territorial waters from external threats, while the IRGC has a broader mission to defend the Iranian revolution from any foreign or domestic threat

note 2: the Artesh Navy operates Iran’s larger warships and operates in the Gulf of Oman, the Caspian Sea, and deep waters in the region and beyond; the IRGC Navy has responsibility for the closer-in waters of the Persian Gulf and Strait of Hormuz

note 3: the Basij is a volunteer paramilitary group, which sometimes acts as an auxiliary law enforcement unit for the IRGC; it is formally known as the Organization for the Mobilization of the Oppressed and also known as the Popular Mobilization Army

note 4: the Ministry of Intelligence and Security and law enforcement forces under the Interior Ministry, which report to the president, and the IRGC, which reports to the supreme leader, share responsibility for law enforcement and maintaining order

note 5: the FARAJA is the uniformed police of Iran; it includes branches for public security, traffic control, anti-narcotics, special forces (riot control, counterterrorism, hostage rescue, etc), intelligence, and criminal investigations; the FARAJA also has responsibility for border security (Border Guard Command)

16 for voluntary military service for men; military service is compulsory for all Iranian men at age 18 or 19 years of age; compulsory service obligation 14-21 months, depending on the location of service; women exempted from conscription but may volunteer (2025)

note: conscripts may serve in the Artesh, IRGC, or Law Enforcement

the Iranian military's inventory includes a mix of domestically produced and foreign equipment largely of Chinese, Russian/Soviet, and US origin (US equipment acquired prior to the Islamic Revolution in 1979); it also has some military equipment from North Korea such as midget submarines and ballistic missiles; in recent years, Iran has received some newer equipment from Russia; Iran has a defense industry with the capacity to develop, produce, support, and sustain air, land, missile, and naval weapons programs (2025)

information varies; up to 600,000 total active armed forces personnel; estimated 400,000 Islamic Republic of Iran Regular Forces (350,000 Ground Forces; 18,000 Navy; 40,000 Air Force/Air Defense Forces); up to estimated 190,000 Islamic Revolutionary Guard Corps (100-150,000 Ground Forces; 20,000 Navy; 15,000 Aerospace Force; 5,000 Qods Force); estimated 90,000 active Basij Paramilitary Forces (2025)