Operation Big Bang Destroys Heligoland Bunkers and Military Installations, April 18, 1947
The Operation Big Bang, the largest non-nuclear man-made explosion to that time, destroys bunkers and military installations on the North Sea island of Heligoland, Germany. Date: April 18, 1947 Read more on Wikipedia β π Other events on April 18 π Events on this day in 1947 π On This Day (Today)