Evacuation of the Louvre museum art collection during World War II

During the beginning of the German invasions during World War II, Jacques Jaujard, the director of the French Musées Nationaux, anticipating the fall of France, decided to organize the evacuation of the Louvre art collection in to the provinces.
Evacuation of the art collection.
On 25 August 1939, the Louvre was closed for 3 days, officially for repairs. However, much of the Louvre art collection was hauled on trucks (203 vehicles transporting 1862 wooden cases) and sent to Château de Chambord. The crates had a marking to identify the importance of the art pieces they contained: a yellow circle for very valuable art pieces, green for major works and red for world treasures (the "Mona Lisa" was marked with three red circles).
Some of the art pieces were too big to be fit in a truck. For example "The Raft of the Medusa" had to be covered with a blanket. When the truck initially arrived at Versailles on its route to Chambord, the canvas touched an electric cable and created a short-circuit which switched off the electricity in the whole town. After that, the routes were carefully planned to avoid this type of problem, and attendants with poles were responsible to deal with electric or phone cables.
The last art piece to leave the museum was the "Winged Victory of Samothrace", which was moved on September 3, 1939, the day the French ultimatum to Germany expired.
Throughout the war, the art pieces were clandestinely moved from chateau to chateau to avoid being taken back by the Nazis. For example, the "Mona Lisa" was moved from Chambord to several castles and abbeys, to finish at the end of the war at the Musée Ingres in Montauban. The "Winged Victory of Samothrace" and "Venus de Milo" were kept at Château de Valençay, which was spared the German occupation on a technicality.
The arrival of the German army in Paris.
On 16 August 1940, count Franz von Wolff-Metternich, who was responsible of the conservation of the French art collections under the Kunstschutz principle, arrived in Paris to oversee France's art collection, but the museum was almost empty. He knew what was going on but voluntarily did not do anything.