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
Commodore (Royal Navy) 1734 the title of commodore was formally approved by an order in council.. They were formally separated into first class (those with subordinate line captains) and second class (those commanding ships themselves) in 1826. The previous broad red and blue pennants were abolished in 1864 along with the coloured squadrons, the commodore of the white's broad pennant with the Cross of St George remained as the command flag for commodores first class, who wore the same sleeve lace as rear admirals. The white broad pennant with a red ball was introduced as the command flag for commodores second class. The