|Wipers from the air|
Somehow calling it "Wipers" is both apt, and not enough.
As an aside, something like a million men died within 10 miles of Ypres town centre during World War 1, during the three battles of Ypres.
If you ever get the chance to make a visit, go to Tyne Cot (the largest Commonwealth War Cemetery in the World) as well as the German cemetery at Langemarck. After the end of the War, the Belgians would only let the Germans have one, small, cemetery so there is a mass grave for about 30,000 men in a space the size of a badminton court.