Napoleon institutionalised plunder of conquered territories: French museums contain art stolen by Napoleon's forces from across Europe. Artefacts were brought to the Musée du Louvre for a grand central museum; his example would later serve as inspiration for more notorious imitators. He was compared to Adolf Hitler most famously by the historian Pieter Geyl in 1947 and Claude Ribbe in 2005. David G. Chandler, a foremost historian of Napoleonic warfare, wrote in 1973 that, "Nothing could be more degrading to the former [Napoleon] and more flattering to the latter [Hitler]. The comparison is odious. On the whole Napoleon was inspired by a noble dream, wholly dissimilar from Hitler's... Napoleon left great and lasting testimonies to his genius—in codes of law and national identities which survive to the present day. Adolf Hitler left nothing but destruction."

What practice in defeated territories became institutionalized under Napoleon?