Authored By Dan Alex (Updated: 5/11/2016):
Night-fighters maintained something of a limited, albeit primitive, existence in World War 1. Aircraft were sent into the night skies and crews were generally left to their own keen vision and senses in terms of locating enemy bombers or observation balloons. After the war, the aircraft business reeled in their production goals and stuck to more conventional and conservative creations, leaving dedicated systems such as night-fighters along the wayside. As World War 2 revved up to a fever pitch in Europe, Adolf Hitler unleashed his forces against the likes of Luxembourg, Belgium, France and Poland in coordinated air attacks utilizing land and air elements to eventually own half of Europe within a few years. With Western Europe now in check, he set his sights on the island nation across the English Channel. His own commanders assured him victory was at hand as the same tactic could be used against Britain once air superiority was in their favor. At first, this involved brazen day-light bombing raids but these quickly produced unacceptable losses to the ranks of the Luftwaffe thanks to the stout reserve of British pilots. To remedy the situation and still give himself a shot at victory, Hitler turned to a relentless night-bombing campaign of London herself and all applicable communications and radar installations. This proved to hand the British a major concern that they had little an answer for.
The RAF (Britain's Royal Air Force) lacked any dedicated war implements designed specifically for combating incoming enemy fighters and bombers at night. Though already making good with the development of early-from ground-based radar and a connected communications front, the island nation still needed "boots in the air" to make a difference against the German strikes. At hand were the basic fighter collections of Supermarine Spitfires, Hawker Hurricanes and Bolton Paul Defiants. The Spitfire was an exceptional fighter to say the least - downright legendary - but she became so through primarily fighting enemy aircraft during daylight hours. She was far from a night-hunter and her distinct ground operation (thanks to her narrow undercarriage) proved tricky if not downright dangerous in the darkness of night. The Hawker Hurricane, on the other hand, proved serviceable enough in the night-fighting role but she was essentially a modern fighter from a bygone era - outclassed in many key ways. The Defiant became an extremely short-term night-fighting solution but stemmed from an air frame that had suffered great losses during her time as a daytime mount. To add insult to injury, the Defiant was also limited in armament to a rear-mounted powered turret and performance-wise she was not the fastest thoroughbred in the stable. Experimentation led to the use of complex airborne radar systems in the larger Bristol Blenheim and the Bristol Beaufighter airframes - both emerging as adequate night-fighters that found somewhat better successes than their smaller fighter derivatives. These aircraft, though larger, had some semblance of speed and could direct themselves to the approaching aerial target as required. Anyway one observes it, Britain was in dire need of an answer and that answer was needed fast.