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
Procurement programme of the Royal Australian Navy least 24 new helicopters by 2014. In June 2011 the Australian government announced the purchase of 24 MH-60R "Romeo" Seahawk helicopters as a replacement for the S-70-B2. A full listing of all current Projects is available at the Defence Materiel Organisation website. Procurement programme of the Royal Australian Navy The Royal Australian Navy, although a significant force in the Asia-Pacific region, is nonetheless classed as a medium-sized navy. Its fleet is based around two main types of surface combatant, with limited global deployment and air power capability. However, in 2009, a white paper, "", was produced by the Australian government