Do a search, "refugees of World War 2"
People who are displaced are often referred to as refugees, asylum seekers, or internally displaced persons (IDPs), depending on their specific situation.
The 2012 insurgency in northern Mali created 100,000+ internally displaced persons so far.
Refugees
To authorize for a limited period of time the admission into the United States of certain European displaced persons for permanent residence, and for other purposes. Be it enacted by the Senate and House of Representatives of the United States of America in Congress assembled, That this Act may be cited as the Displaced Persons Act of 1948. See below link:
DPs were known as displaced persons at the end of the war. They were Jews and any other person who had no home or country to return to and needed a place to live. They were put in displaced persons camps until they could be relocated.
Palestine and the United States.
houses had been bombed, millions of people had travelled for work.
Try this site: http://www.dpcamps.org/
It sounds to me as if the word that you are looking for is displaced persons.
They went to displaced persons camps and from there tried to build a new life.
During the Holocaust the Jews were first sent to ghettos and from there to extermination camps and concentration camps.After the Holocaust many Jews were unable to go home and had to live in camps for Displaced Persons until they could find somewhere permanent.
state the persons who should be interested in accounting information