A daring yet little-known mission took place in Canada during World War II, but this stealth mission didn't use bombs and bullets. It was all about the weather. The German military had trouble getting accurate weather forecasts.
In temperate climates, weather systems generally move from west to east.
That fact aligned with the allied network of North American weather stations gave the Allies an advantage, so the Nazis decided to build their own secret network of weather stations.
In 1943, German submarine U-boat 537 arrived in Canada's Labrador's Martin Bay with an automated weather station code named "Kurt."
The crew, along with two meteorologists, assembled the bulky apparatus a quarter of a mile inland.
"Weather station Kurt" was lost in history until 1977 when archaeologists stumbled upon what they thought was an old Canadian Weather Station.
Franz Selinger, a retired engineer, who was working on a book on Nazi weather stations, located U-537's log book.
It confirmed the unbelievable story of the only armed German landing in North America in World War II.
In 1981, Selinger told the Associated Press, "The Canadians wouldn't believe me. But when i presented them with proof, things started humming."
He said the station operated from October 1943 until January 1944, when extreme cold became too much for its nicad batteries.
You can see "Weather station Kurt" in the Canadian War Museum located in Ottawa, Canada.