Before revision: Prior to the start of the Second World War the Germans had deployed the landing aid system at many Luftwaffe airfields in and outside Germany and equipped most of their bombers with the radio equipment needed to use it.
After revision: Prior to the start of the Second World War the Germans deployed theIn the UK it was known as Standard Beam Approach (SBA).Walter Blanchard, "Hyperbolic Airborne Radio Navigation Aids", The Journal of Navigation, Volume 44 Number 3, September 1991 system at many Luftwaffe airfields in and outside Germany and equipped most of their bombers with the radio equipment needed to use it.