Major John Aiso, a nisei and chief instructor of the Military Intelligence Service Language School at Camp Savage, Minnesota, arrived at Brantford to administer language testing.
When the soldiers at Brantford were tested for their language ability in English and Japanese, only one quarter were rated as good or excellent in Japanese. This was despite the fact that their issei parents spoke Japanese. Recruiters of the nisei had assumed they could speak Japanese well. The soldiers were divided into four groups: senior, intermediate, junior, and beginner for placement in the S-20 language school (Theurer and Oue, 2021, p. 242). In July, the nisei headed to BC by rail to train as linguists at the S-20 Canadian Army Japanese Language School. It was located beside the Vancouver Technical School, where some of them had attended as students. At that time, Vancouver was devoid of Japanese people. The nisei were billeted at the Vancouver Technical School grounds. As Roy Matsui related, they were confined to the barracks and not allowed to be seen in public.