The Caproni Ca.4 was a heavy bomber aircraft developed by the Italian company Caproni during World War I. It featured a distinctive three-bay biplane design with a large wingspan, allowing it to carry significant bomb loads. The aircraft was powered by multiple engines, which provided the necessary thrust for its size. First flown in 1916, the Ca.4 was primarily used by the Italian Air Force for strategic bombing missions. Its design included a spacious cabin for the crew and a robust structure to withstand the rigors of flight. The Ca.4 played a role in the evolution of military aviation during the war.