Editing Enigma machine (section)

==== Glühlampenmaschine, Enigma A (1924) ====
The reflector, suggested by Scherbius' colleague Willi Korn,<ref name="Korn">{{cite book |last1=De Leeuw |first1=Karl Maria Michael |last2=Bergstra |first2=J A |title=The history of information security : a comprehensive handbook |date=2007 |publisher=Elsevier |location=Amsterdam |isbn=9780080550589 |page=393}}</ref> was introduced with the glow lamp version.

The machine was also known as the military Enigma. It had two rotors and a manually rotatable reflector. The typewriter was omitted and glow lamps were used for output. The operation was somewhat different from later models. Before the next key pressure, the operator had to press a button to advance the right rotor one step.