John Fisher, 1st Baron Fisher Biography

John Arbuthnot Fisher, 1st Baron Fisher, GCB, OM, GCVO (25 January 1841 – 10 July 1920), commonly known as Jacky or Jackie Fisher, was a British admiral known for his efforts at naval reform. He had a huge influence on the Royal Navy in a career spanning more than 60 years, starting in a navy of wooden sailing ships armed with muzzle-loading cannon and ending in one of steel-hulled battlecruisers, submarines and the first aircraft carriers. The argumentative, energetic, reform-minded Fisher is often considered the second most important figure in British naval history, after Lord Nelson.