The task was given to the Bombay Army, and command of the expeditionary force to Lieutenant-General Sir Robert Napier. This was a very unusual decision as it was the first time a campaign had been entrusted to an officer from the Corps of Royal Engineers. It was also a very sensible decision, as the whole campaign would rely on engineering skills to succeed. Intelligence was carefully gathered about Ethiopia while the size of the army was calculated and its needs estimated before the massive effort was begun. Moorehead describes it: "Thus, for example, forty-four trained elephants were to be sent from India to carry the heavy guns on the march, while hiring commissions were dispatched all over the Mediterranean and the Near East to obtain mules and camels to handle the lighter gear. A railway, complete with locomotives and some twenty miles (32 km) of track, was to be laid across the coastal plain, and at the landing place large piers, lighthouses and warehouses were to be built."