World War II bombers were large aircraft designed to carry and drop bombs on enemy targets. They played a crucial role in the conflict, conducting strategic bombing campaigns to destroy military installations, factories, and infrastructure. Notable bombers included the Boeing B-17 Flying Fortress and the Avro Lancaster, which were used by the Allies, and the Heinkel He 111 and Junkers Ju 87 Stuka used by the Axis powers. These bombers varied in size and capability, with some designed for high-altitude missions while others were built for low-level attacks. Their effectiveness often depended on factors like speed, payload capacity, and defensive armament. The use of bombers significantly changed warfare tactics and had lasting impacts on military strategy.