Berlin, Germany the capital of Germany, was subject to 363 air raids during WW2. It was bombed by the RAF Bomber Command between 1940 and 1945, the United States Army Air Forces' Eighth Air Force between 1943 and 1945, and the French Air Force in 1940 and between 1944 and 1945 as part of the Allied campaign of strategic bombing of Germany.
CONTENT OF THE CONFIDENTIAL LETTER:
SHEET 1
ALBERT RUPP propeller hub factory
Berlin-Neukölln, Hermannstraße 48
Confidential !
3.2.43
Protos Telephone G.m.b.H.
Customer service department
Berlin SW 11
Schöneberger Str. 2-4
For the purpose of connecting to the warning center, I have been commissioned to ensure that an exchange connection is set up in the air raid shelter.
I have a rental system from you with contract no. 9145, which has 2 exchange lines. I intend to have a telephone with an outside line installed so that it can be used via a socket on the second floor and in the basement. I apply for connection to the warning center from the responsible authorities and carry it out by them.
SHEET 2
ALBERT RUPP, propeller hub factory, Berlin-Neukölln
Sheet 2 for writing
Protos Telefon G.m.b.H.
Customer service department. from the: 3.2.43
I would like to ask you to let me know whether this can be carried out as I intend. I would also like to mention that my two trunk lines are currently... are heavily needed. If there are any visual difficulties, a new office connection would probably have to be ordered from the Reichspost.
I look forward to your appreciated reply and sign.
Heil itler!
Engineer. A. Rupp
In Absence: Zecer
PLEASE SEE MY 100% POSITIVE FEEDBACK AND BUY WITH CONFIDENCE.
Albert Rupp (b.1885-d.1958) was a Swiss aviation pioneer and inventor. Acquired the German pilot's license no. 62 on February 17, 1911!. (So before the First World War.) These were also known as "Old Eagles". Altogether there were 817 women and men.
Career as a pilot and inventor
Albert Rupp, who had completed an apprenticeship as a mechanic in Thun, took his first professional steps as an aircraft mechanic and pilot at the French aircraft company Société Antoinette. In 1911 he went to Berlin, passed the German pilot's test in 62nd place and earned his Swiss pilot's license in ninth place. The year before he had joined the Albatros aircraft factory in Berlin-Johannisthal and became its chief pilot. His work mainly consisted of training, flying in and delivering aircraft to the army administration. On July 20, 1911, he flew over Berlin in an Albatros biplane as the "second German" at a height of 300 meters and circled the Victory Column twice.
In 1912 Rupp took part in the Second Balkan War together with Bruno Büchner on the Bulgarian side. With 25 planes, the two pilots traveled by train to Svilengrad, then Mustafa Pasha, to deliver them there. They also flew to the front themselves to observe troop movements and drop messages. Rupp also delivered military aircraft to the Russian officer school in Saint Petersburg and to his home country, Switzerland.
In 1913, Albert Rupp took on a managerial position at the Air Transport Company (LVG) in Berlin. He stayed in Germany until 1945, where he devoted himself to the development and production of the patented aircraft propeller hub named after him, which was later installed in Swiss military aircraft. The special feature of the "Rupp hub" was that the propeller could be changed particularly easily and quickly.