Engelandvaarder, was the term given during the Second World War to men and women who attempted to escape from the Netherlands across over 100 miles of the North Sea to reach England and freedom. Only about one in ten were successful in the crossing, with most just disappearing in the sea. Once they reached England many joined the Allied forces to help free their country from Nazi Germany. The period covered is between the capitulation of the Dutch armed forces on 15 May 1940 and the Allied invasion of Normandy on 6 June 1944 (D-Day).

Wilhelmina was Queen of the Netherlands from 1890 until her abdication in 1948. She reigned for nearly 58 years, making her the longest-reigning monarch in Dutch history, as well as the longest-reigning female monarch outside the United Kingdom. Her reign saw World War I, the Dutch economic crisis of 1933 and World War II.