World War II memorials and cemeteries in the Netherlands
During World War II, the Netherlands was the scene of five years of continuous air warfare between the Allied and the Nazis as the Netherlands lies en route from England to Germany and was designated and built up as the foremost line of Nazi air defence of Germany. Also, in 1944 there was heavy land fighting during the largest Allied airborne attack of the WWII in the south and east of the country in 1944–45.
Source: Wikipedia — World War II memorials and cemeteries in the Netherlands (CC BY-SA 4.0)