He retired from active service in 1940 .
After the success of that operation , Sakai was transferred to rear echelon operations as commander of the IJA 7th Depot Division in 1938 and the IJA 109th Division in 1939 .
Sakai retired from active service in 1940 .
After the success of that operation , Sakai was transferred to rear echelon operations as commander of the IJA 7th Depot Division in 1938 and the IJA 109th Division in 1939 .