In regards to the Messerschmitt Bf109E-4/7 Trop During the first 50 % of the 2nd World War, the Messerschmitt Bf109 E ended up being the main fighter for the German airforce. The E-4 housed a 1,100hp Daimler Benz DB 601Aa motor and was armed with two 7.92mm machine weapons on the nose, and a 20mm cannon on each wing. For some aircraft, bullet-proof cup had been always reinforce the front regarding the canopy. Also, a 20mm canon, which went through a pipe into the propeller was expected to be installed but was unsuccessful. Displaying superb acceleration and diving capability, the E-type planes overpowered the RAF's Hawker hurricane and equaled the Spitfire fighters in Battle of Britain. However, with a flight selection of only 560km, the E-4 planes were limited by simply 15 minutes of combat over Uk skies. Hence, the bombers are not given adequate help and suffered heavy harm. As a result, the Luftwaffe's strategy to bomb England into surrender ended in failure. To deal with this downside, the E-4 planes were equipped with additional 300L gas tank. These improved fighters, called E-7, had been first deployed by the end of 1940. Following the Battle of Britain, the E-4/7 planes were delivered to leading lines of Northern Africa. Once the Bf109 F-type fighter's manufacturing was advanced level, the E-4/7 had been retired from front side lines. However, some veteran pilots continued to use the E-4/7 mainly for ground help responsibility before summer of