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
Ships of the Royal Navy carriers, as well as small craft, e.g. landing craft and Admiralty-built trawlers. Ships of the Royal Navy Ships of the Royal Navy is a naval history reference work by J. J. Colledge (1908–1997); it provides brief entries on all recorded ships in commission in the Royal Navy from the 15th century, giving location of constructions, date of launch, tonnage, specification and fate. It was published in two volumes by Greenhill Books. Volume 1, first published in 1969, covers major ships; Volume 2, first published in 1970, covers Navy-built trawlers, drifters, tugs and requisitioned ships including Armed Merchant Cruisers. The book