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The Osaka Arsenal was a state weapons factory of the Imperial Japanese Army in Osaka during the period from 1870 to 1945. In the Meiji period, the self-supply of the armed forces with modern weapons was a high concern for the government. The Japanese military leader Ōmura Masujirō proposed to build a garrison with gun and ammunition ...
Initial units of Krupp 7.5 cm Model 1903 were imported, and then eventually over 2,000 units, designated "Type 38" in Japan, were produced under license by the army’s Osaka Arsenal. [5] The original Type 38 gun had a conical interrupted screw, a single box type trail which limited gun elevation to only 16°30'.
Thus, like the US who purchased French Renault tanks (Model 1917s) for its first tank units, the planners at the Imperial Japanese Army General Staff found it necessary to purchase artillery, and turned to Krupp in Germany. Initial units were imported, and then further production was made under license by the Army's Osaka Arsenal starting in ...
Interest in the Krupp 105mm field gun was expressed by the Imperial Japanese Army General Staff in November 1904, during the height of the Russo-Japanese War.As warship production in Japan had priority during the 1890s, the technology and industrial infrastructure to construct medium or large caliber weapons was reserved for the Imperial Navy, as a consequence, the first twenty units were ...
The Type 4 15 cm Howitzer was designed by the Army’s Osaka Armory to rectify the shortcomings of the Type 38 15 cm howitzer – namely its lack of portability. The Type 96 15 cm Howitzer was intended to replace it, but it remained in use throughout World War II.
The first air raid on Osaka lasted for about three and a half hours from 23:57 on March 13, 1945, to 03:25. A total of 274 B-29 heavy bombers attacked Osaka. The first wave of 43 bombers of the 314th Bombardment Wing arrived from Guam island. It was a low-level night raid from an altitude of about 2,000m.
The Type 91 10 cm howitzer (九一式十糎榴弾砲, Kyūisshiki Jyūsenchi Ryūdanhō) was a 105 mm (4.13 in) howitzer used by the Imperial Japanese Army during the Second Sino-Japanese War and World War II as the standard Japanese light howitzer.
The 28 cm Howitzer L/10 was designed in 1884 by the British Armstrong company. Armstrong had an Italian subsidiary which produced guns for the Italian Navy and Major Pompeo Grillo, a heavy artillery specialist was hired in April 1884 to help the construction of artillery at a new plant in Osaka. [1]