The Arado Ar 65 was a German single-seat biplane fighter and reconnaissance aircraft, developed in the early 1930s. It represented one of the first true fighter aircraft for the newly re-emerging German Luftwaffe, disguised initially under the guise of civilian aviation. The Ar 65 was a conventional biplane design, featuring an all-metal fuselage covered with fabric and wooden wings. It was powered by a liquid-cooled BMW VI V-12 engine, giving it a top speed of around 300 km/h (186 mph). Armed with two 7.92 mm machine guns, it was a capable fighter for its era. Initially introduced into service around 1933, the Ar 65 served alongside its predecessor, the Arado Ar 64, in the clandestine fighter groups that would eventually form the core of the Luftwaffe. However, with the rapid advancements in aviation technology, particularly the emergence of faster monoplanes like the Messerschmitt Bf 109, the Ar 65 quickly became obsolete as a front-line fighter. By 1935, it was largely relegated to advanced training duties for future fighter pilots, and production ceased in 1936. A small number were also supplied to the Royal Bulgarian Air Force. Interestingly, some of the last remaining Ar 65s found an unexpected role during World War II on the Eastern Front, being pressed into service as glider tugs for transport gliders like the DFS 230, showcasing its enduring robustness even in a vastly different capacity.