Teizo became an infantry instructor rising to the rank of major by March 1924.
Appointed a lieutenant-colonel in the 1st Regiment of the 1st Division in August 1929, Teizo was transferred to the Toyohashi Reserve Officer Training School in 1932.
[1] On 1 March 1943 he was appointed commander of the 6th Army based in Hailar replacing General Seiichi Kita.
This may be partially incorrect as there is a 1st Lieutenant Takuro Ishiguro of the 34th Sentai who was killed in action during the bombing of Wewak on 20 August 1943.
Ishigoro wrote a book on his experiences, Joshin no Tsuki (浄心の月), published by Kawamata Kankosha, Mito City, Ibaraki Prefecture.