The siege of Rees of 1599, also known as the relief of Rees, was an unsuccessful attempt by Protestant-German forces led by Count Simon VI of Lippe, and Anglo-Dutch forces sent by Prince Maurice of Nassau, commanded by Philip of Hohenlohe-Neuenstein and the Count Ernst of Solms, to capture the strategic stronghold of Rees, Lower Rhine, Duchy of Cleves from the Spanish forces of Don Francisco de Mendoza, Admiral of Aragon, second-in-command of the Army of Flanders, and Governor Don Ramiro de Guzmán, between 10–12 September 1599, during the Eighty Years' War and the Anglo-Spanish War. Wikipedia