The 1948 Palestine war was fought in the territory of what had been, at the start of the war, British-ruled Mandatory Palestine. During the war, the British withdrew from Palestine, Zionist forces conquered territory and established the State of Israel, and over 700,000 Palestinians fled or were expelled. It was the first war of the Israeli–Palestinian conflict and the broader Arab–Israeli conflict.

In the 1948 Palestine war more than 700000 Palestinian Arabs – about half of Mandatory Palestine's Arab population – fled from their homes or were expelled, at first by paramilitaries, and after the establishment of the Israel, by its military. The expulsion and flight was a central component of the fracturing, dispossession, and displacement of Palestinian society, known as the Nakba. Dozens of massacres targeting Arabs were conducted by Israeli military forces and between 400 and 600 Palestinian villages were destroyed. Village wells were poisoned in a biological warfare programme and properties were looted to prevent Palestinian refugees from returning. Other sites were subject to Hebraization of Palestinian place names.