High Quality Content by WIKIPEDIA articles! The Imperial Japanese Navy fielded naval paratroopers during World War II. The troops were officially part of the Special Naval Landing Forces (SNLF or Rikusentai). They came from the 1st, 2nd and 3rd Yokosuka SNLFs. The 2nd Yokosuka took no part in any airborne operations and became an island defensive base unit. 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.