The Type 1 machine gun was developed for aerial use for the

Imperial Japanese Army The was the official ground-based armed force of the Empire of Japan from 1868 to 1945. It was controlled by the Imperial Japanese Army General Staff Office and the Ministry of the Army, both of which were nominally subordinate to the Emperor o ...

and

Navy A navy, naval force, or maritime force is the branch of a nation's armed forces principally designated for naval warfare, naval and amphibious warfare; namely, lake-borne, riverine, littoral zone, littoral, or ocean-borne combat operations and ...

during

World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposin ...

. It was an adaptation of the German

MG 15 machine gun The MG 15 was a German 7.92 mm machine gun designed specifically as a hand-manipulated defensive gun for combat aircraft during the early 1930s. By 1941 it was replaced by other types and found new uses with ground troops. History The MG 1 ...

. (Note that the 12.7mm Ho-103 and H-104 machine guns are also known as the "Type 1 machine gun", but are actually a 12.7mm adaption of the

Browning M1919 machine gun The M1919 Browning is a .30 caliber medium machine gun that was widely used during the 20th century, especially during World War II, the Korean War, and the Vietnam War. The M1919 saw service as a light infantry, coaxial, mounted, aircraft, and ...

in fixed and flexible mountings, respectively.)

Installations

Aichi B7A The was a large and powerful carrier-borne torpedo-dive bomber produced by Aichi Kokuki for the Imperial Japanese Navy Air Service during the Second World War. Built in only small numbers and deprived of the aircraft carriers it was intended ...

Mitsubishi Ki-67 The Mitsubishi Ki-67 ''Hiryū'' (飛龍, "Flying Dragon"; Allied reporting name "Peggy") was a twin-engine heavy bomber produced by Mitsubishi Aircraft Company and used by the Imperial Japanese Army Air Service and Imperial Japanese Navy Air Serv ...

Nakajima C6N The Nakajima C6N ''Saiun'' (彩雲, "Iridescent Cloud") was a carrier-based reconnaissance aircraft used by the Imperial Japanese Navy Air Service in World War II. Advanced for its time, it was the fastest carrier-based aircraft put into service ...

Yokosuka D4Y The is a two-seat carrier-based dive bomber developed by the Yokosuka Naval Air Technical Arsenal and operated by the Imperial Japanese Navy from 1942 to 1945 during World War II. Development of the aircraft began in 1938. The first D4Y1 was co ...

Aircraft guns World War II weapons of Japan 8 mm machine guns