The walls of the Memorial Chamber are divided into 17 niches designed by Ira Lake and A. Fortescue Duguid. Each contain a marble slab under a gothic blind arch topped with a gablet and finial, and decorated with various badges and insignia, including those of, on the mouldings: Canada's 178 pre-1914 militia regiments; in the pierced quatrefoil panels: cavalry, and non-infantry field units; in the diaper background: pre-Confederation French and British regiments and colonial forces; on the gablet crockets: reinforced battalions; on the gablet springers: all branches of the Canadian Corps; on the arch quatrefoil and cusps: Badges and insignia of Canada's 178 pre-1914 militia regiments: The Royal Canadian Dragoons, Lord Strathcona's Horse (Royal Canadians), The Governor General's Body Guard, 1st Hussars, 2nd Dragoons, 3rd The Prince of Wales' Canadian Dragoons; on the arch spandrels: medals and war decorations of the allied countries; on the shield: coats of arms appropriate to the relevant historical context; and on the low relief panel: historical scenes of Canadians during World War I. The marble panels themselves originally described the various campaigns and battles in the theatres of war between 1914 and 1918. These, however, were replaced in 1982 with panels illustrating the Canadian Forces' engagements from the Fenian Raids to the Korean War, along with excerpts from the Bible, poems, and other literature.