As a thoroughbred fighting aeroplane, the basic airframe of the Supermarine Spitfire was capable of accepting successive modifications which saw this incredible aircraft remain in production throughout the entire Second World War. That adaptability allowed the Spitfire to be upgraded to meet the challenge posed by the latest Luftwaffe fighters, one which saw the Spitfire Mk.IX hurriedly introduced during the summer of 1942 to combat the dominance of the fearsome Focke Wulf FW190 ‘Butcher Bird’. This variant of the Spitfire has since been described as potentially the most effective ‘stop-gap’ fighter in the history of military aviation.