Update

1). I’ve added links to Allied agents codes and Referat 12 in several essays dealing with agents codes.

2). In The US AN/GSQ-1 (SIGJIP) speech scrambler I had written ‘The US authorities used up to mid 1943 the Bell Labs A-3 speech scrambler, a device that utilized speech inversion’. This was not correct, as the A-3 used band-splitting and inversion.

3). In WWII Myths - T-34 Best Tank of the war I added a new link to the report Evaluation of tanks T-34 and KV by workers of the Aberdeen testing grounds of the US, as the old one was not working.

4). In Enigma security measures I added information from the report ‘Änderungen beim Schlüsseln mit Maschinenschlüssel’ in paragraphs Random indicators and CY procedure.