First Turkish invasion, July 1974
Main article: Military operations during the Turkish invasion of Cyprus

Location of Turkish forces during the late hours of 20 July 1974.
Turkey invaded Cyprus on Saturday, 20 July 1974. Heavily armed troops landed shortly before dawn at Kyrenia (Girne) on the northern coast meeting resistance from Greek and Greek Cypriot forces. Ankara said that it was invoking its right under the Treaty of Guarantee to protect the Turkish Cypriots and guarantee the independence of Cyprus. By the time the UN Security Council was able to obtain a ceasefire on 22 July the Turkish forces were in command of a narrow path between Kyrenia and Nicosia, 3% of the territory of Cyprus, which they succeeded in widening, violating the ceasefire demanded in Resolution 353.

On 20 July, the 10,000 inhabitants of the Turkish Cypriot enclave of Limassol surrendered to the Cypriot National Guard. Following this, according to Turkish Cypriot and Greek Cypriot eyewitness accounts, the Turkish Cypriot quarter was burned, women raped and children shot. 1,300 Turkish Cypriots were confined in a prison camp afterwards. The enclave in Famagusta was subjected to shelling and the Turkish Cypriot town of Lefka was occupied by Greek Cypriot troops.

According to the International Committee of the Red Cross, the prisoners of war taken at this stage and before the second invasion included 385 Greek Cypriots in Adana, 63 Greek Cypriots in the Saray Prison and 3,268 Turkish Cypriots in various camps in Cyprus. On the night of 21 to 22 July 1974, a battalion of Greek commandos was transported to Nicosia from Crete in a clandestine airlift operation.