The Messerschmitt Bf 109 was a German fighter aircraft that played a significant role during World War II. First introduced in 1937, it was known for its speed, agility, and advanced design. The Bf 109 was used by the Luftwaffe and became one of the most produced fighter planes in history, with over 33,000 units built. Equipped with a powerful engine and various armament options, the Bf 109 excelled in dogfights and ground attacks. It served in multiple theaters of war, including the Battle of Britain and the Eastern Front, and was flown by many notable pilots, including Erich Hartmann, the highest-scoring ace in history.