Operation Morvarid
Operation Morvarid (Persian: عملیات مروارید, meaning "Pearl") was an operation launched by the Iranian Navy and Air Force against the Iraqi Navy and Air Force on 28 November 1980 in response to Iraq positioning radar and monitoring equipment on the Al-Bakr and Khor-al-Amaya oil rigs to counter Iranian air operations. The operation resulted in a victory for Iran, which managed to destroy both oil rigs as well as much of the Iraqi Navy and inflicted significant damage to Iraqi ports and airfields.
Battle
On 28 November 1980, after Iranian technicians prepared as many aircraft and helicopters as possible, Iranian F-4 Phantoms and F-5 Tiger IIs attacked Iraqi airfields around Basra. They managed to destroy one Iraqi MiG-21 Fishbed on the ground.
During the night of 29 November, six ships of the Islamic Republic of Iran Navy's Task Force 421 deployed Iranian marines on the Iraqi oil terminals at Mina al Bakr and Khor-al-Amaya. The marines, supported by AH-1J Sea Cobras, Bell 214s and CH-47C Chinooks, gunned down most Iraqi defenders during a short firefight, then deployed a large number of bombs and mines. They were then evacuated by helicopter and left the Iraqi oil installations and early warning bases in flames.