Rescuing Da Vinci: Hitler and the Nazis Stole Europe's Great Art – America and Her Allies Recovered It by Robert M. Edsel

The Monuments Men were a group of 345 or so men and women from thirteen nations who comprised the Monuments, Fine Arts, and Archives section during World War II. Many were museum directors, curators, art historians and educators. Together they worked to protect monuments and other cultural treasures from the destruction of World War II. In the last year of the war, they tracked, located, and ultimately returned more than 5 million artistic and cultural items stolen by Hitler and the Nazis. Their role in preserving cultural treasures was without precedent.