K-W Line
The Koningshooikt–Wavre Line, abbreviated to KW Line (French: Ligne KW; Dutch: KW-stelling) and often known as the Dyle Line after the Dijle (Dyle) river, was a 60-kilometre-long (37 mi) fortified line of defence prepared by the Belgian Army between Koningshooikt (Province of Antwerp) and Wavre (Province of Brabant) which was intended to protect Brussels from a possible German invasion. Construction on the KW Line began in September 1939 after World War II had begun but while Belgium itself remained a neutral state.