Florence Nightingale is credited with several innovations in medicine, particularly in the field of nursing. She is best known for her role in reforming hospital sanitation practices during the Crimean War, significantly reducing mortality rates among injured soldiers. Nightingale established professional nursing standards and emphasized the importance of hygiene, fresh air, and proper nutrition in patient care. She founded the first formal nursing school in London, paving the way for nursing as a respected profession. Nightingale’s contributions have had lasting impacts on healthcare practices, earning her the title of the founder of modern nursing.