1938
- 1941
Chief of 7th Section, Army Aeronautical Department, Ministry of War
1941
- 1942
Attached to the Halpin Branch, Army Aeronautical Research Institute
1942
Chief of the Halpin Branch, Army Aeronautical Research Institute
1942
Chief of the Manchurian Subdivision, Army Aeronautical Research Institute
1942
- 1943
Chief of Research Section, Army Fiel Factory
1943
- 1944
Head of the Fuel Factory South Sumatra
1944
- 1945
Commanding Officer South Sumatra Fuel Depot