noun
returnee; repatriate
Refers to a person who has returned, often after a long absence or from a difficult situation such as war, captivity, or exile. More formal than 帰ってきた人.
戦争が終わり、多くの帰還者が故郷に戻った。
After the war ended, many returnees came back to their hometowns.
政府は海外からの帰還者を支援するプログラムを始めた
The government started a program to support returnees from abroad.
Compound of 帰還 (return, repatriation) and 者 (person). The word is transparently derived from its components.