Judo was introduced to Canada in the early twentieth century by Japanese migrants, and was limited to British Columbia until the forced expulsion, internment, and resettlement of Japanese-Canadians after Japan entered the Second World War in 1941.
New dojos opened in the Prairies, Ontario, and Quebec, primarily in the mid-to-late 1940s, and the centre of Canadian judo shifted from Vancouver to Toronto, where a significant number of judoka had settled after the war.
Many early dojos were housed at the local branch of the YMCA, which also provided short-term accommodation, assisted with finding employment, and coordinated social programs for resettled Japanese Canadians.
All three men were interned at Tashme, but left for Ontario by 1944 through a provision of the War Measures Act that allowed Japanese Canadians to move elsewhere in Canada if they could find employment.
[6][7] The number of judo clubs increased significantly during the 1950s and 60s, in large part due to the efforts of Frank Hatashita, who played a role similar to Shigetaka Sasaki in British Columbia during the pre-war period.