The Himeyuri students (ひめゆり学徒隊, Himeyuri Gakutotai, Lily Princesses Student Corps), sometimes called "Lily Corps" in English, was a group of 222 students and 18 teachers of the Okinawa Daiichi Women's High School and Okinawa Shihan Women's School formed into a nursing unit for the Imperial Japanese Army during the Battle of Okinawa in 1945. They were mobilized by the Japanese army on March 23, 1945.