During the
Battle of France, the
Royal Air Force raided Mannheim as part of a night of raids attacking Nazi Germany's oil infrastructure. The British government had developed plans for the large-scale area bombing of cities from the summer of 1940, but waited for an opportunity to present itself. That came after the
German raid on
Coventry. The new bombing policy, officially as a reprisal for Coventry and Southampton, was ordered by
Winston Churchill on 1 December and explained in the
War Cabinet on 12 December. Operation Abigail was approved on the 13th, on condition that it receive no publicity and be considered an experiment. The air-crews "rightly regarded the attack as a terror raid". Incendiaries dropped by eight bombers to mark the target missed the city centre, and most of the 100 or so aircraft (of 134 dispatched) that did drop bombs missed the city centre. German casualties were 34 dead and 81 injured. The lessons learned from the large dispersal of bombs over Mannheim led to the development of the "
bomber stream", which entailed the maximum number of bombs over the shortest time and area. Despite the lack of decisive success, approval was granted for further similar raids. In response to
Luftwaffe raids on Britain, the RAF launched Operation Abigail Rachel against Mannheim. The raid took place on the night of 16/17 December 1940 and was intended to be the first where the RAF attackers would exceed 200 aircraft. In the event only 134 assorted craft were available for the operation. This was due to bad weather at British airfields. Although of poor effect, the raiders dropped one hundred tonnes of explosives and 14,000 incendiaries on Mannheim. The raid resulted in the loss of seven of the attacking aircraft. This made a loss rate to the RAF of 5.2%. The Times reported attacks on Mannheim Railway Station, goods yards and industrial buildings. Bombers arrived just prior to 20.00 and carried through the attack in waves until the early hours of the following morning. The attack also encompassed the Neckarstadt areas of the city and the twin city of
Ludwigshafen. A pilot reported the anti-aircraft fire rising "like a continuous golden fountain". However, other pilots said they were able to press home their attacks untroubled. In contrast, a German High Command communique described the impact on production as 'insignificant'. An
Air Ministry communique reported - == 1941 ==