Union Navy the set of Army ranks. The most visible change was that henceforth some individuals would be designated commodore, rear admiral, vice admiral, and finally admiral, all new formal ranks, and equivalent to, respectively, brigadier general, major general, lieutenant general, and general. A doctrinal shift took place at the same time. Prior to the war, the United States Navy emphasized single-ship operations, but the nature of the conflict soon made use of whole fleets necessary. Already at the Battle of Port Royal (7 November 1861), 77 vessels, including 19 warships, were employed. This was the largest naval expedition that had ever
Officer Corps of the Royal Navy Officer Corps of the Royal Navy The officer corps of the Royal Navy is the cadre of personnel holding a commission from the sovereign appointing them in a position of authority in the Royal Navy. There are three main routes of entry to the officer corps; direct entry, professional entry and the upper yardman scheme. Direct entrants are recruited as civilians and undertake a full course of training to become employable. Professional entrants are individuals who have qualified professionally in the civilian environment and their employment in the Royal Navy will use these qualifications. These are doctors, dentists, nursing officers