Charles William Ferdinand, Duke of Brunswick in the context of "War of the First Coalition"

The Battle of Valmy, also known as the Cannonade of Valmy, was the first major victory by the army of France during the Revolutionary Wars that followed the French Revolution. The battle took place on 20 September 1792 as Prussian troops commanded by the Duke of Brunswick attempted to march on Paris. Generals François Kellermann and Charles Dumouriez stopped the advance near the northern village of Valmy in Champagne-Ardenne.

In this early part of the Revolutionary Wars—known as the War of the First Coalition—the new French government was in almost every way unproven, and thus the small, localized victory at Valmy became a huge psychological victory for the Revolution at large. The outcome was thoroughly unexpected by contemporary observers—a vindication for the French revolutionaries and a stunning defeat for the vaunted Prussian army. The victory emboldened the newly assembled National Convention to formally declare the end of monarchy in France and to establish the French Republic. Valmy permitted the development of the Revolution and all its resultant ripple effects, and for that it is regarded by historians as one of the most significant battles in history.

Caroline of Brunswick-Wolfenbüttel (Caroline Amelia Elizabeth; 17 May 1768 – 7 August 1821) was Queen of the United Kingdom of Great Britain and Ireland and Queen of Hanover from 29 January 1820 until her death in 1821 as the estranged wife of King George IV. She was Princess of Wales from 1795 to 1820.

The daughter of Charles William Ferdinand, Duke of Brunswick, and Princess Augusta of Great Britain, Caroline was engaged in 1794 to her first cousin George, Prince of Wales, whom she had never met. He was already illegally married to Maria Fitzherbert. George and Caroline married the following year but separated shortly after the birth of their only child, Princess Charlotte, in 1796. By 1806, rumours that Caroline had taken multiple lovers and had an illegitimate child led to an investigation into her private life. The dignitaries who led the investigation concluded that there was "no foundation" to the rumours, but Caroline's access to her daughter was still restricted. In 1814, Caroline moved to Italy, where she employed Bartolomeo Pergami as a servant. Pergami soon became Caroline's closest companion, and it was widely assumed that they were lovers. In 1817, Caroline was devastated when Charlotte died in childbirth. She heard the news from a passing courier as George had refused to write and tell her. He was determined to divorce Caroline and set up a second investigation to collect evidence of her adultery.

The Prussian invasion of Holland was a military campaign under the leadership of Charles William Ferdinand, Duke of Brunswick, against the rise of the democratic Patriot movement in the Dutch Republic in September–October 1787 with the aim of disempowering the patriots and disarming the Free Corps, as well as reinstating William V of Orange as hereditary stadtholder in the Dutch Republic.