1933
- 1934
Chief of Pyrotechnical Section, Army Armaments Factory
1934
- 1935
Director of Itabashi Gunpowder Branch, Army Armaments Factory
1935
- 1936
Chief of Firearms Section, Ordnance Bureau, Ministry of War
1936
- 1938
Chief of Manufaction Section, Army Armaments Factory
1938
- 1939
Head of 2nd Technical Research Institute
1939
- 1940
Head of Pyrotechnical Arsenal, Army Armaments Factory
1940
- 1943
Commanding Officer 2nd Tokyo Arsenal