Mohamed Khider Airport[4] or Biskra Ouakda Airport (IATA: BSK, ICAO: DAUB) is an airport in Algeria, located approximately 12 km north-northeast of Oumache; about 200 km south-southwest of Constantine. During World War II, the airport was known as "Biskra Airfield". It was a major United States Twelfth Air Force base of operations during the North African campaign against the German Afrika Korps. Known combat units assigned to the airfield were: 97th Bombardment Group B-17 Flying Fortress (14 December 1942 – 8 February 1943); 301st Bombardment Group B-17 Flying Fortress (16 December 1942 – 17 January 1943); 1st Fighter Group P-38 Lightning (24 December 1942 – 8 February 1943); HQ, 5th Bombardment Wing (January–March 1943).