Paul Hendrik "Henk" Walaardt Sacré (11 October 1873[1] – 1949) was a Dutch military engineer and aviator born in Doetinchem.
[2] Deputy chief of the general staff Cornelis Snijders requested him to specialize in military aviation, in 1909 this was made his fulltime job.
[2] In July 1913 the Military Aviation Branch was created,[2] stationed at Soesterberg,[4] and Walaardt Sacré was made its first commander.
[2] As he was to be replaced as leader of the Aviation Branch he left the army in 1919 and joined the Air Transport Service of the Netherlands-English Technical Trading Society[6] In 1922 Walaardt Sacré founded N.V. Nationale Vliegtuig-Industrie in order to break up the monopoly of Anton Fokker but by 1926 the firm was closed.
[2] His next project was setting up a commercial flight rout between the Americas and the Netherlands, after the Hindenburg Disaster these plans were permanently shelved.