People of the Revolution and the USSR
- Émile Vandervelde Émile Vandervelde Chairman of the International Socialist Bureau who led the Second International and joined Belgium’s wartime government in 1914
- Camille Huysmans Camille Huysmans Secretary of the Second International from 1905 to 1922 who kept its Bureau alive in the war and later became Belgian prime minister
- Raoul Van Overstraeten Raoul Van Overstraeten A royal military adviser who tested wartime warnings with caution