In February 1942 RAF intelligence was baffled by a newly-identified radar network on the coast of Nazi-occupied Europe, codenamed Würzburg. The brilliant scientist Dr RV Jones proposed an assault to capture key components. The nearest accessible enemy set stood upon a steep cliff at Bruneval in Normandy. Winston Churchill enthused, as did Lord Louis Mountbatten, chief of Combined Operations. A company of the newly-formed Airborne Forces was committed to the operation, which took place on the night of 27/28 February. Amid heavy snow 120 men landed, some of whom were misdropped almost two miles from their objective. They nonetheless launched the assault, dismantled the German radar, and after three nail-biting hours in France and a fierce battle with Wehrmacht defenders, escaped in the nick of time by landing-craft across stormy seas to Portsmouth.