WAdriaan Anthonisz (1527–1607) was a Dutch mathematician, surveyor, cartographer, and military engineer who specialized in the design of fortifications. As a mathematician Anthonisz discovered in 1585 the ratio of a circle's circumference to its diameter, which would later be called pi.
WHenri-Alexis Brialmont, nicknamed The Belgian Vauban after the French military architect, was a Belgian army officer, politician and writer of the 19th century, best known as a military architect and designer of fortifications. Brialmont qualified as an officer in the Belgian army engineers in 1843 and quickly rose up the ranks. He served as a staff officer, and later was given command of the district of the key port of Antwerp. He finished his careers as Inspector-General of the Army. Brialmont was also an active pamphleteer and political campaigner and lobbied through his career for reform and expansion of the Belgian military and was also involved in the foundation of the Congo Free State.
WMenno, Baron van Coehoorn was a Dutch soldier and engineer, regarded as one of the most significant figures in Dutch military history. In an era when siege warfare dominated military campaigns, he and his French counterpart Vauban were the acknowledged experts in designing, taking and defending fortifications.
WWolfgang William Romer was a Dutch military engineer, born at The Hague.
WHenrik Ruse, Baron of Rysensteen was a Dutch officer and fortification engineer. Following a period when he served in various armies in Germany and Italy, he wrote a well-researched book documenting the latest trends in fortification systems across Europe. As a result, he was entrusted with commissions for improving defences in his native Amsterdam, in Germany, and finally in Denmark and Norway where, benefitting from the support of the monarchy, he first became a general and later a baron. Ruse died in Sauwerd near Groningen in the Netherlands.
WRichard Leonard Arnold Schoemaker was a Dutch Olympic fencer, engineer in the Royal Netherlands East Indies Army, professor of architecture at Bandung Institute of Technology and Delft University of Technology, and leader of a resistance group during World War II, for which he was executed at the Sachsenhausen concentration camp.
WCornelis "Kees" Staf was a Dutch politician of the defunct Christian Historical Union (CHU) party now merged into the Christian Democratic Appeal (CDA) party and businessman.