Junkers Ju 87 rely on their instruments for direction. The Ju 87's standard Revi C12D gunsight was replaced with the new Nachtrevi ("Nightrevi") C12N. On some Ju 87s, the Revi 16D was exchanged for the Nachtrevi 16D. To help the pilot see his instrument panel, a violet light was installed. On 15 November 1942, the Auxiliary "Staffel" were created. By mid-1943, "Luftflotte" 1 was given four "Staffeln" while "Luftflotte" 4 and "Luftwaffe Kommando Ost" (Luftwaffe Command East) were given six and two respectively. In the first half of 1943, 12 "Nachtschlachtgruppen" ("night battle groups") had been formed, flying a multitude of different types
Junkers J 1 end of January 1916, Junkers had been given a contract to further develop his all-metal concept, and the later Junkers J 2 single-seat fighter, which would never see frontline service, was the follow-on to the J 1. The J 2 would only bear a superficial similarity to the J 1, being more aerodynamically refined and slightly smaller in scale, yet nonetheless the two aircraft shared an essentially similar structure. It is believed that the Junkers J 1 was not flown again after January 1916. However, it survived the First World War, and was placed on static display in 1926 at