December 1939 saw a Royal visit from his Majesty the King accompanied by the Duke of Gloucester and Viscount Lord Gort. The onset of winter proved to be an additional challenge as bitterly cold weather prevented flying, caused damage to aircraft and took its toll on the health of the airmen, who were living in fairly primitive conditions. When the German invasion (Blitzkrieg) commenced in May 1940, No 85 Squadron found itself locked in a bitter contest with the Luftwaffe, and with attacks on its aerodromes commonplace there was no respite from operations.