Bastille is a former French Prison where many dangerous political figures are imprisoned. It was first built in 1370. Its attack at about half past three on July 14, 1789, during the French Revolution by a mob assisted by royal troups sparked the real begining of the French Revolution, which lasted for about 10 years. Although the govenor of the prison -- De Launay was expecting a mob attack but underestimated the people's anger when a huge group of French Guards and angry citizens tried to break into the fortress. In the manga, Oscar and her French Guards brought eminution and other weapons to assist the citizens. She died on the day of the attack of the attack, and fortunately lived long enough to just witness the surrender of the prison. But in the anime, she died before this important moment. Louis XVI didn't take this day seriously and said that the day was nothing. Right now in France, Bastille Day is a national holiday and is celebrated annually on July 14th.