The siege of Luxembourg was a siege by France of the Habsburg-held Fortress of Luxembourg that lasted from 1794 until 7 June 1795, during the French Revolutionary Wars. Although the French army failed to breach the walls of the city, which were renowned as amongst the best in the world, the fortress was forced to surrender after more than seven months.

Jean René Moreaux commanded the French Army of the Moselle during the French Revolutionary Wars. He joined the French Royal Army in 1776 and was badly wounded in the American Revolutionary War two years later. After leaving military service, he married and took over the family business. At the time of the French Revolution he was elected second in command of a volunteer battalion. He was rapidly promoted, emerging as a general officer in May 1793. After another promotion, he led a corps at Pirmasens and a division at Wissembourg. He was appointed commander of the Army of the Moselle in June 1794. In November he was sent with three divisions to invest the fortress of Luxembourg. He caught a fever and died during the Siege of Luxembourg. His surname is one of the names inscribed under the Arc de Triomphe.