Thousands of Ukrainians and other Europeans were needlessly imprisoned as "enemy aliens" during Canada's national internment operations of 1914-1920. The Stanley Barracks Receiving Station was used for this purpose between 14 December 1914, and 2 October 1916. Stanley Barracks, constructed in 1841 to replace Fort York, stood on this site until 1953. Only the Officers' Quarters remain, located due south of this plaque.