The map above shows how widespread the challenges were that faced the Monuments Men, or as they are more formally known, the Monuments, Fine Arts and Archives Program. The personal papers of some of the Monuments Men, including conservator George Leslie Stout (a version of whom is played by George Clooney in the new movie), are held in the Smithsonian Institution's Archives of American Art.

The Archives also has a fantastic series of oral history recordings with the soldiers, which are well worth your listen.

For more on the true story of the Monuments Men, read our coverage of their travails in Italy and Austria.