Which war led the United States ask for Florence Nightingales assistance in setting up military hospitals?

Florence Nightingale is deemed to be the founder of wooden nursing. Her life was dedicated to the sick and the war wounded. She is best known for her participation during the Crimean War. In 1854, she organized a unit of women's nurses. By the war’s end, she had become a legend.

She is best remembered as the lady who carries a lamp at night as she visited the wounded to give and comfort. She was a manager and trainer of nurses during the war. She organized care for the wounded soldiers. Nightingale’s most famous contribution came during this war, she responded to the horrific conditions of the injured soldiers in Britain.