 Concealed listening posts at Rjukan and Notodden also revealed high-level German discussions of long-range weaponry. The place name Peenemünde was frequently mentioned. As this intelligence reaching Tronstad's ear via his contacts in Norway, he forwarded it to the British. As a result, the Royal Air Force bombed the Army Research Center of Peenemünde in August 1943. Further raids were made by the US Army Air Force in July and August 1944. The bombing halted the weapons program there, which centered around development of the V-1 flying bomb and the V-2 rocket. Fellow scientists Rideal and Evans later wrote that Tronstad "contributed directly to the speedy victory of the Allied Nations, besides saving the region which came to be known as' Southern England ' from an even longer and more severe ordeal than it actually endured".
