Various elements within the room were formed with stone quarried from the battlefields of Europe: from the United Kingdom came Hoptonwood limestone; from Belgium, black marble for the wall plinths and altar steps, as well as St. Anne marble for the clustered columns that support the fan vault ceiling from each corner of the room; and from France, Château-Gaillard stone for the walls and the vault itself, as well as stone from Flanders' fields. These materials were worked into 700 carved elements by a number of different artists and sculptors under the direction of Ira Lake, who desired to tell not only the complete story of Canada's participation in the First World War, but also to commemorate military units as far back as the 17th century regime of New France.