"Because the Swiss have been politically neutral for centuries and have long enjoyed a reputation for honoring their agreements, a pope or emperor could be confident that his Swiss Guards wouldn’t turn on him when the political winds shifted direction. The Swiss Guards’ honor was put to the test in 1792, when–after trying to escape the French Revolution–King Louis XVI, Marie-Antoinette, and their children were hauled back to the Tuileries Palace in Paris. A mob of working-class Parisians stormed the palace in search of aristocratic blood. More than 700 Swiss officers and soldiers died while defending the palace, without knowing that their royal employers–like Elvis–had left the building." (Source)