The Blue Squadron was a group of voluntary pilots of Spanish Air Force that during World War II fought next to Luftwaffe (Wehrmacht) in In front Russian to the aid of the Germans with his Legion Condor, during Spanish Civil War. In the Luftwaffe it was denominated to them with the name of 15ª Spanische Staffel, added to 27º Group of Caza (JG27), elite unit to the control of Tungsten von Richtofen (old head of the Legion Condor in the Spanish Civil War). In fact she was not a single squadron, but they were five squadrons who went away standing out between 1941 and 1944, every six months approximately, to fight in the Russian front. Its emblem was based on the emblem of Blue Patrol of Joaquin Garci'a-Morato leader of the national fighter aircraft during the Spanish Civil War. In the nose of the Messerschmitt Bf 109 of 1ª Squadron, the mechanics painted the emblem of the fighter group of Garci'a Morato, accompanied now by a two number Roman, in the case of 1ª Squadron (indicating in this way the second fight of the members of the famous unit against the Comunism); by the Cross of Santiago, in 2ª; mounted on the German cross that she identified to the airplanes of the Luftwaffe, in 3ª; superposed on the symbol of the German hunting (she shoots with an arrow winged, surrounded by a crown of laurels) in 4ª; and with a five number Roman (v) in 5ª, placed in the same position that the II of 1ª.