Unlike his Imperial Japanese Army counterpart, Colonel Yasue Norihiro, he believed strongly in the Protocols of the Elders of Zion; these beliefs led him to think that attracting Jews to settle in Japanese-controlled Asia was in the Empire of Japan's best interests.

He went on to the Navy Staff College and served on a number of vessels, including the Hizen, cruisers Kasuga, Yakumo, Kitakami, Kiso, and Nisshin.

The group published many documents detailing their thoughts on the Jewish conspiracy, including lists of known Jews, and a Japanese translation of the Protocols, written by Yasue.

As war with China approached in the 1930s, Inuzuka came to support the 'Manchurian faction,' a number of military men who believed that control of Manchuria was crucial to Japan's survival.

In a report to his superiors that year, Inuzuka compared the Jews to fugu, the famous poisonous fish delicacy that if not prepared correctly could turn lethal.

He helped form the Pacific Trading Company, a joint Jewish-Japanese endeavor, and met with many of East Asia's top Jewish leaders, both religious and financial.

He also contributed anonymously to the monthly journal Kokusai Himitsu Ryoku no Kenkyu (国際秘密力の研究, Studies in the International Secret Power), which was funded by the Foreign Ministry and German Embassy.