The first Luftwaffe night fighter squadron was established
on the 19th of July 1940. Under the command of a
Josef
Kammhuber, to counter the RAF using a chain of radar stations
from Norway to the Swiss border to provide early warning of
imminent attacks.
The Warplanes of the Third Reich.
ISBN-10: 0385057822
German Aircraft of the Second World War.
ISBN-10: 0370000242
Hitler's Luftwaffe.
ISBN-10: 051718771X
For a complete list of
sources