A series of purges and forced retirements resulted in the manpower of the airforce being halved between February 1979 and July 1980, leaving the IRIAF ill-prepared for the Iran–Iraq War, also called the “1st Persian Gulf War”. The sudden Iraqi air strikes against eight major Iranian airbases and four other military installations, launched on the afternoon of 22 September 1980, came as a complete surprise and caused a shock in the IRIAF.
On 23 September 1980, the Iranians retaliated with Operation Kaman 99, which involved 206 F-4, F-5 and F-14 aircraft. In that operation, 40 F-4 Phantoms, armed with Mark 82, Mark 83 and Mark 84 bombs and AGM-65 Maverick missiles, took off from Hamadan. After refueling mid-air, the Phantoms reached the Iraqi capital Baghdad, where they attacked the al-Rashid, al-Habbaniyah and al-Kut airbases. Meanwhile, eight more F-4s took off from Tehran and launched a second attack on the al-Rashid airbase.