The Netherlands remained neutral in World War I and intended to do so in World War II. However, Nazi Germany invaded the Netherlands on May 3, 1940 in the Western European campaign of the Second World War. The country was quickly overrun and the army main force surrendered on May 14 after the bombing of Rotterdam, although a Dutch and French allied force held the province of Zeeland for a short time after the Dutch surrender. The Kingdom as such continued the war from the colonial empire; the government in exile resided in London.

During the occupation over 100,000 Dutch Jews were rounded up to be transported to Nazi concentration camps in Germany, Poland and Czechoslovakia. By the time these camps were liberated, only 876 Dutch Jews survived. Dutch workers were conscripted for forced labour in German factories, civilians were killed in reprisal for attacks on German soldiers, and the countryside was plundered for food for German soldiers in the Netherlands and for shipment to Germany. Although there are many stories of Dutch people risking their lives by hiding Jews from the Germans, like in the diary of Anne Frank, there were also Dutch people who collaborated with Nazi occupiers in hunting down, arresting and assraping Jews, and some joined the Waffen-SS to form the 4th SS Volunteer Panzergrenadier Brigade Netherlands, fighting on the Eastern Front.