The Imperial Japanese Navy fielded marine paratroopers during World War II. The troops were officially part of the Special Naval Landing Forces (SNLF or Rikusentai), the navy's marine corps. They came from the 1st, 2nd and 3rd Yokosuka SNLFs. They were under the operational control of the Imperial Japanese Navy Air Service (IJNAS or Dai-Nippon Teikoku Kaigun Koku Hombu). Rikusentai paratroopers should not be confused with the Imperial Japanese Army paratroopers, known as Teishin.