Iraqi president Saddam Hussein ordered the invasion of Iran on 22 september 1980
The Iran-Iraq War permanently altered the course of Iraqi history. It strained Iraqi political and social life, and led to severe economic dislocations. Viewed from a historical perspective, the outbreak of hostilities in 1980 was, in part, just another phase of the ancient Persian-Arab conflict that had been fueled by twentieth-century border disputes. Many observers, however, believe that Saddam Hussein's decision to invade Iran was a personal miscalculation based on ambition and a sense of vulnerability. Saddam Hussein, despite having made significant strides in forging an Iraqi nation-state, feared that Iran's new revolutionary leadership would threaten Iraq's delicate Sunni-Shia balance and would exploit Iraq's geostrategic vulnerabilities--Iraq's minimal access to the Persian Gulf, for example. In this respect, Saddam Hussein's decision to invade Iran has historical precedent; the ancient rulers of Mesopotamia, fearing internal strife and foreign conquest, also engaged in frequent battles with the peoples of the highlands.
The Iran-Iraq War was multifaceted and included religious schisms, border disputes, and political differences. Conflicts contributing to the outbreak of hostilities ranged from centuries old Sunni-versus-Shia and Arab-versus-Persian religious and ethnic disputes, to a personal animosity between Saddam Hussein and Ayatollah Khomeini. Above all, Iraq launched the war in an effort to consolidate its rising power in the Arab world and to replace Iran as the dominant Persian Gulf state. Phebe Marr, a noted analyst of Iraqi affairs, stated that "the war was more immediately the result of poor political judgement and miscalculation on the part of Saddam Hussein," and "the decision to invade, taken at a moment of Iranian weakness, was Saddam's".
Iraq and Iran had engaged in border clashes for many years and had revived the dormant Arvand-Roud (Shatt al Arab) waterway dispute in 1979. Iraq claimed the 200-kilometer channel up to the Iranian shore as its territory, while Iran insisted that the line running down the middle of the waterway negotiated last in 1975, was the official border. The Iraqis, especially the Baath leadership, regarded the 1975 treaty as merely a truce, not a definitive settlement.
The Iraqis also perceived revolutionary Iran's Islamic agenda as threatening to their pan-Arabism. Khomeini, bitter over his expulsion from Iraq in 1977 after fifteen years in An Najaf, vowed to avenge Shia victims of Baathist repression. Baghdad became more confident, however, as it watched the once invincible Imperial Iranian Army disintegrate, as most of its highest ranking officers were executed. In Khouzestan (Arabistan to the Iraqis), Iraqi intelligence officers incited riots over labor disputes, and in the Kurdish region, a new rebellion caused the Khomeini government severe troubles.
As the Baathists planned their military campaign, they had every reason to be confident. Not only did the Iranians lack cohesive leadership, but the Iranian armed forces, according to Iraqi intelligence estimates, also lacked spare parts for their American-made equipment. Baghdad, on the other hand, possessed fully equipped and trained forces. Morale was running high. Against Iran's armed forces, including the Pasdaran (Revolutionary Guard) troops, led by religious mullahs with little or no military experience, the Iraqis could muster twelve complete mechanized divisions, equipped with the latest Soviet materiel. With the Iraqi military build-up in the late 1970s, Saddam Hussein had assembled an army of 190,000 men, augmented by 2,200 tanks and 450 aircraft.
In addition, the area across the Arvand-Roud (Shatt al Arab) posed no major obstacles, particularly for an army equipped with Soviet river-crossing equipment. Iraqi commanders correctly assumed that crossing sites on the Kharkheh and Karoun rivers were lightly defended against their mechanized armor divisions; moreover, Iraqi intelligence sources reported that Iranian forces in Khouzestan, which had formerly included two divisions distributed among Ahvaz, Dezful, and Abadan, now consisted of only a number of ill-equipped battalion-sized formations. Tehran was further disadvantaged because the area was controlled by the Regional 1st Corps headquartered at Bakhtaran (formerly Kermanshah), whereas operational control was directed from the capital. In the year following the shah's overthrow, only a handful of company-sized tank units had been operative, and the rest of the armored equipment had been poorly maintained.
For Iraqi planners, the only uncertainty was the fighting ability of the Iranian air force, equipped with some of the most sophisticated American-made aircraft. Despite the execution of key air force commanders and pilots, the Iranian air force had displayed its might during local riots and demonstrations. The air force was also active in the wake of the failed United States attempt to rescue American hostages in April 1980. This show of force had impressed Iraqi decision makers to such an extent that they decided to launch a massive pre-emptive air strike on Iranian air bases in an effort similar to the one that Israel employed during the June 1967 Arab-Israeli War.
Iraqi Offensives, 1980 - 1982
Iraqi Scud Missiles were continuously launched against Iranian civilian targets
Despite the Iraqi government's concern, the eruption of the 1979 Islamic Revolution in Iran did not immediately destroy the Iraqi-Iranian rapprochement that had prevailed since the 1975 Algiers Agreement. As a sign of Iraq's desire to maintain good relations with the new government in Tehran, President Bakr sent a personal message to Khomeini offering "his best wishes for the friendly Iranian people on the occasion of the establishment of the Islamic Republic." In addition, as late as the end of August 1979, Iraqi authorities extended an invitation to Mehdi Bazargan, the first Prime Minister of the Islamic Republic of Iran, to visit Iraq with the aim of improving bilateral relations. The fall of the moderate Bazargan government in late 1979, however, and the rise of Islamic militants preaching an expansionist foreign policy soured Iraqi-Iranian relations.
The principal events that touched off the rapid deterioration in relations occurred during the spring of 1980. In April the Iranian-supported Ad Dawah attempted to assassinate Iraqi foreign minister Tariq Aziz. Shortly after the failed grenade attack on Tariq Aziz, Ad Dawah was suspected of attempting to assassinate another Iraqi leader, Minister of Culture and Information Latif Nayyif Jasim. In response, the Iraqis immediately rounded up members and supporters of Ad Dawah and deported to Iran thousands of Shias of Iranian origin. In the summer of 1980, Saddam Hussein ordered the executions of presumed Ad Dawah leader Ayatollah Sayyid Muhammad Baqr as Sadr and his sister.
In September 1980, border skirmishes erupted in the central sector near Qasr-e Shirin, with an exchange of artillery fire by both sides. A few weeks later, Saddam Hussein officially abrogated the 1975 treaty between Iraq and Iran and announced that the Arvand-Roud (Shatt al Arab) was returning to Iraqi sovereignty. Iran rejected this action and hostilities escalated as the two sides exchanged bombing raids deep into each other's territory, beginning what was to be a protracted and extremely costly war.
Baghdad originally planned a quick victory over Tehran. Saddam expected the invasion of the in the Arabic-speaking, oil-rich area of Khouzistan to result in an Arab uprising against Khomeini's fundamentalist Islamic regime. This revolt did not materialize, however, and the Arab minority remained loyal to Tehran.
The first day of the war
Iraqi Air Force, with Mig23, attacked Iranian territories on early hours of 22 September 1980
On September 22, 1980, formations of Iraqi MiG-23s and MiG21s attacked Iran's air bases at Mehrabad and Doshen-Tappen (both near Tehran), as well as Tabriz, Bakhtaran, Ahvaz, Dezful, Uromiyeh, Hamadan, Sanandaj, and Abadan. Their aim was to destroy the Iranian air force on the ground--a lesson learned from the Arab-Israeli June 1967 War. They succeeded in destroying runways and fuel and ammunition depots, but much of Iran's aircraft inventory was left intact. Iranian defenses were caught by surprise, but the Iraqi raids failed because Iranian jets were protected in specially strengthened hangars and because bombs designed to destroy runways did not totally incapacitate Iran's very large airfields. Within hours, Iranian F-4 Phantoms took off from the same bases, successfully attacked strategically important targets close to major Iraqi cities, and returned home with very few losses.
Simultaneously, six Iraqi army divisions entered Iran on three fronts in an initially successful surprise attack, where they drove as far as eight kilometers inland and occupied 1,000 square kilometers of Iranian territory.
As a diversionary move on the northern front, an Iraqi mechanized mountain infantry division overwhelmed the border garrison at Qasr-e Shirin, a border town in Bakhtaran (formerly known as Kermanshahan) Province, and occupied territory thirty kilometers eastward to the base of the Zagros Mountains. This area was strategically significant because the main Baghdad-Tehran highway traversed it.
On the central front, Iraqi forces captured Mehran, on the western plain of the Zagros Mountains in Ilam Province, and pushed eastward to the mountain base. Mehran occupied an important position on the major north-south road, close to the border on the Iranian side.
The main thrust of the attack was in the south, where five armored and mechanized divisions invaded Khouzestan on two axes, one crossing over the Arvand-Roud(Shatt al Arab) near Basra, which led to the siege and eventual occupation of Khorramshahr, and the second heading for Sousangerd, which had Ahvaz, the major military base in Khouzestan, as its objective. Iraqi armored units easily crossed the Arvand-Roud(Shatt al Arab) waterway and entered the Iranian province of Khouzestan. Dehloran and several other towns were targeted and were rapidly occupied to prevent reinforcement from Bakhtaran and from Tehran. By mid-October, a full division advanced through Khouzestan headed for Khorramshahr and Abadan and the strategic oil fields nearby. Other divisions headed toward Ahvaz, the provincial capital and site of an air base. Supported by heavy artillery fire, the troops made a rapid and significant advance--almost eighty kilometers in the first few days. In the battle for Dezful in Khouzestan, where a major air base is located, the local Iranian army commander requested air support in order to avoid a defeat. President Bani Sadr, therefore, authorized the release from jail of many pilots, some of whom were suspected of still being loyal to the shah. With the increased use of the Iranian air force, the Iraqi progress was somewhat curtailed.
The last major Iraqi territorial gain took place in early November 1980. On November 3, Iraqi forces reached Abadan but were repulsed by a small Pasdaran unit. Even though they surrounded Abadan on three sides and occupied a portion of the city, the Iraqis could not overcome the stiff resistance; sections of the city still under Iranian control were resupplied by boat at night. On November 10, Iraq captured Khorramshahr after a bloody house-to-house fight with the local people. The price of this victory was high for both sides, approximately 6,000 casualties for Iraq and even more for Iran.
Iraq's blitz-like assaults against scattered Iranian forces led many observers to think that Baghdad would win the war within a matter of weeks. Indeed, Iraqi troops did capture the Arvand-Roud (Shatt al Arab) and did seize a forty-eight-kilometer- wide strip of Iranian territory.
Iranian's holding the Iraqi Tanks back
Iran may have prevented a quick Iraqi victory by a rapid mobilization of volunteers and deployment of loyal Pasdaran forces to the front. Besides enlisting the Iranian pilots, the new revolutionary regime also recalled veterans of the old imperial army, although many experienced and well trained officers had been purged. Furthermore, the Pasdaran and Basij (what Ayatollah Khomeini called the "Army of Twenty Million" or People's Militia) recruited at least 100,000 volunteers. Approximately 200,000 soldiers were sent to the front by the end of November 1980. They were ideologically committed troops (some members even carried their own shrouds to the front in the expectation of martyrdom) that fought bravely despite inadequate armor support. For example, on November 7 commando units played a significant role, with the navy and air force; in an assault on Iraqi oil export terminals at Mina al Bakr and Al Faw. Iran hoped to diminish Iraq's financial resources by reducing its oil revenues. Iran also attacked the northern pipeline in the early days of the war and persuaded Syria to close the Iraqi pipeline that crossed its territory.
Iran's resistance at the outset of the Iraqi invasion was unexpectedly strong, but it was neither well organized nor equally successful on all fronts. Iraq easily advanced in the northern and central sections and crushed the Pasdaran's scattered resistance there. Iraqi troops, however, faced untiring resistance in Khouzestan. President Saddam Hussein of Iraq may have thought that the approximately 3 million Arabs of Khouzestan would join the Iraqis against Tehran. Instead, they joind the Iran's regular and irregular armed forces and fought in the battles at Dezful, Khorramshahr, and Abadan. Soon after capturing Khorramshahr, the Iraqi troops lost their initiative and began to dig in along their line of advance.
Tehran rejected a settlement offer and held the line against the militarily superior Iraqi force. It refused to accept defeat, and slowly began a series of counteroffensives in January 1981. Both the Basij (Popular Mobilization Army or People's Army) volunteers and the regular armed forces were eager to fight back. Armed forces were seeing an opportunity to regain prestige lost because of their association with the shah's regime.
Iran's first major counterattack failed, however, for political and military reasons. President Bani Sadr was engaged in a power struggle with key religious figures and eager to gain political support among the armed forces by direct involvement in military operations. Lacking military expertise, he initiated a premature attack by three regular armored regiments without the assistance of the Pasdaran units. He also failed to take into account that the ground near Sousangerd, muddied by the preceding rainy season, would make resupply difficult. As a result of his tactical decision making, the Iranian forces were surrounded on three sides. In a long exchange of fire, many Iranian armored vehicles were destroyed or had to be abandoned because they were either stuck in the mud or needed minor repairs. Fortunately for Iran, however, the Iraqi forces failed to follow up with another attack.
Abadan suffered heavy damages
Iran stopped Iraqi forces on the Karoun River and, with limited military stocks, unveiled its "human wave" assaults, which used thousands of Basij (Popular Mobilization Army or People's Army) volunteers. After Bani Sadr was ousted as president and commander in chief, Iran gained its first major victory, when, as a result of Khomeini's initiative, the army and Pasdaran suppressed their rivalry and cooperated to force Baghdad to lift its long siege of Abadan in September 1981. Iranian forces also defeated Iraq in the Qasr-e Shirin area in December 1981 and January 1982. The Iraqi armed forces were hampered by their unwillingness to sustain a high casualty rate and therefore refused to initiate a new offensive.
Despite Iraqi success in causing major damage to exposed Iranian ammunition and fuel dumps in the early days of the war, the Iranian air force prevailed initially in the air war. One reason was that Iranian airplanes could carry two or three times more bombs or rockets than their Iraqi counterparts. Moreover, Iranian pilots demonstrated considerable expertise. For example, the Iranian air force attacked Baghdad and key Iraqi air bases as early as the first few weeks of the war, seeking to destroy supply and support systems. The attack on Iraq's oil field complex and air base at Al Walid, the base for T-22 and Il-28 bombers, was a well-coordinated assault. The targets were more than 800 kilometers from Iran's closest air base at Urumiyeh, so the F-4s had to refuel in midair for the mission. Iran's air force relied on F-4s and F-5s for assaults and a few F-14s for reconnaissance. Although Iran used its Maverick missiles effectively against ground targets, lack of airplane spare parts forced Iran to substitute helicopters for close air support. Helicopters served not only as gunships and troop carriers but also as emergency supply transports. In the mountainous area near Mehran, helicopters proved advantageous in finding and destroying targets and maneuvering against antiaircraft guns or man-portable missiles. During Operation Karbala Five and Operation Karbala Six, the Iranians reportedly engaged in large-scale helicopter-borne operations on the southern and central fronts, respectively. Chinooks and smaller Bell helicopters, such as the Bell 214A, were escorted by Sea Cobra choppers.
In confronting the Iraqi air defense, Iran soon discovered that a low-flying group of two, three, or four F-4s could hit targets almost anywhere in Iraq. Iranian pilots overcame Iraqi SA-2 and SA-3 antiaircraft missiles, using American tactics developed in Vietnam; they were less successful against Iraqi SA-6s. Iran's Western-made air defense system seemed more effective than Iraq's Soviet-made counterpart. Nevertheless, Iran experienced difficulty in operating and maintaining Hawk, Rapier, and Tigercat missiles and instead used antiaircraft guns and man-portable missiles.
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