The strategist Maj. Gen. Sir Charles Edward Callwell was recalled ['dugout'] from retirement in 1914 to serve as Director of Military Operations. He was removed from this post in January 1916 for perceived failings in the direction of the Dardanelles Campaign, and later served on military missions to Russia and in the Ministry of Munitions.
Major-General Sir Charles Edward Callwell KCB (2 April 1859 – May 1928), was an Anglo-Irish officer of the British Army, who served in the artillery, as an intelligence officer, and as a staff officer and commander during the Second Boer War, and as Director of Operations & Intelligence during World War I. He was also a noted writer of military biography, history, and theory. (Wikipedia)