This is a study of the British military intelligence operations during the Crimean War. It details the beginnings of the intelligence operations as a result of the British Commander, Lord Raglan's, need for information on the enemy. Charles Cattley, the recently expelled British Consul at the Crimean port of Kertch, supplied intelligence on Sevastopol's garrison, on Russian strength, dispositions and reinforcements throughout the Crimea. This system of long-range espionage and prisoner interrogation helped to ensure that the Allies were never caught off guard for the remainder of the war, and...