In 1949, he began studying issues relating to postwar refugees (Displaced Persons [DP]) and wrote a book about them, entitled Du Rhin au Danube avec 60,000 D. P.. He founded an organisation to help them. The organisation established sponsorships for refugee families, and during the 1950s built a number of villages in Austria and Germany to help house many refugees. Although a Dominican friar, Dominique Pire always refused to mix his personal faith with his commitments on behalf of the disadvantaged, a decision that was not always understood by his religious superiors.