The Heinkel He 111 was the most numerous bomber which the Luftwaffe deployed during the Battle of Britain. It was capable of storing and delivering large bombs (250kg) and had state-of-the-art gyroscopic sights to improve its accuracy. The He 111 was protected armour plating and self-sealing fuel tanks which made them difficult to shoot down. Dan Snow provides an overview of this iconic WW2 bomber in this short video.