Florence Nightingale, born on May 12, 1820, in Florence, Italy, dedicated her life to nursing after a thorough education and a calling to promote social improvement. During the Crimean War, she dramatically reduced the mortality rate in military hospitals through her innovative practices and care, earning her the title 'Lady with the Lamp.' After the war, she established the Nightingale School for Nurses, fundamentally transforming nursing as a profession and becoming an influential figure in healthcare reform.