Suga graduated from Meido Middle School in Hiroshima and then the Imperial Japanese Army Academy in Tokyo, as a Second Lieutenant. At around this time he married a woman with the given name Teru; they were to have two sons and four daughters. Suga was an affectionate father and ensured that all of his children went to university, at a time when only five per cent of Japanese went beyond the fifth or sixth grade. He was an expert horseman and a keen practitioner of kendo.