Florence Nightingale is known for her pioneering work in nursing during the Crimean War (1853-1856). She revolutionized nursing practices by emphasizing sanitation, proper nutrition, and trained nursing staff in military hospitals. Nightingale's efforts notably improved conditions for wounded soldiers at Scutari, reducing the mortality rate significantly. She established the Nightingale Pledge and became the founder of modern nursing, advocating for professional training and standards in nursing education. Her influential work not only transformed healthcare practices but also set a precedent for nursing as a respected profession, inspiring countless individuals to enter the field.