Imperial Munitions Board

The Imperial Munitions Board (IMB) was the Canadian branch of the British Ministry of Munitions, set up in Canada under the chairmanship of Joseph Wesley Flavelle. It was formed by the British War Cabinet to alleviate the Shell Crisis of 1915 during the First World War. The Board was mandated to arrange for the manufacture of war materials in Canada on behalf of the British government.

It was the general and exclusive purchasing agent on behalf of the War Office, the Admiralty, the British Timber Controller, the Department of Aeronautics and the Ministry of Munitions, and also acted as an agent for the United States Ordnance Department.