862.20210/1996

The Ambassador in Argentina (Armour) to the Secretary of State

No. 7065

Sir: With reference to the Embassy’s telegram no. 1989 of October 13, 11 p.m., the Department’s answer no. 1549 of October 15, 6 p.m., and the Embassy’s telegram no. 2059 of October 21, 8 p.m.,52 [Page 218] I have the honor to enclose herewith the drafts of the memoranda proposed to be given to the Argentine Ministry of Foreign Affairs regarding the activities of German agents connected with the clandestine radio groups in Argentina. The documents are attached to the memoranda.

It will be noticed that the memoranda contain information regarding the individuals suspected of having connection with these espionage groups which has not been reported to the Department. This information, as well as names of additional suspects, has only recently been received. In spite of the fact that Friedrich Kempter (Koenig) refused to identify a photograph of Hans Napp, additional information recently obtained identifies him more clearly as being identical with Berko of the LIR–MAX group, and the Embassy believes more strongly than ever that Hans Napp is the person involved. For example, it has been definitely established that Hans Napp is an agronomist by profession and that in this capacity he has been manager of several estancias in Argentina and Uruguay.

From newspaper articles the impression has been gathered that the information concerning the PYL–REW group has been presented to the Chilean Government. If this is the case, the Department may desire to consider the possibility of enclosing with the memorandum on Group IV a few of the telegrams sent over station PYL–REW. This would strengthen the cases against Herman Bauer (who is closely connected with Heriberto Schwartau Eskildsen (Enrique) and Friedrich Tadeo von Schulz-Hausmann.

The contents of the enclosed memoranda have been compiled from the files of this Embassy and from local sources. It is realized of course that this information may be subject to revision or addition upon the receipt of further reports on the same subject from the Federal Bureau of Investigation and from the Embassies in Rio de Janeiro and Santiago, but the opportunity is taken of submitting the available material at this time in order to save as much time as possible.

Respectfully yours,

For the Ambassador:
Richard Ford

First Secretary of Embassy
[Enclosure]

Drafts of Memoranda on German Military Espionage in Argentina

The German military espionage service in South America, operating under the orders and instruction of the German High Command, is known to be using at least four groups of espionage agents in Argentina. These four groups are not isolated entities; they work [Page 219] in connection and in collaboration with similar groups which have been established in varying degrees of importance in almost all the other American Republics. Formerly Brazil was the most important scene of operations of these groups, but due to recent restrictive measures in that country, they lost most, if not all, of their agents and equipment. Those few agents who escaped arrest went into hiding or fled to neighboring countries. It is known that at least two of them are in Argentina at present. Since the punitive measures taken by the Brazilian Government, the German High Command has come to look upon Argentina and one other American country as the new headquarters for its espionage organizations.

Through information regarding the activities of these agents which has come to the attention of the Government of the United States it has been possible to learn that the Germans have used couriers on Spanish and other neutral ships, the diplomatic pouches, and the facilities of ordinary mail for transmittal of their information between the United States and South America. The information sent by mail is usually forwarded in secret ink or in cleverly worded business or social letters. This information, is then transmitted from the South American countries by clandestine radio to the German High Command in Germany.

In carrying out their espionage work the Germans endeavored to secure, and in some instances actually secured, the services of the citizens of South American countries. The Germans have also resorted to bribery of police and other government officials in their espionage activities. They have attempted to place friendly officials in military and other delegations which have gone from the Latin American countries to visit the United States. These German agents also use secret post office boxes, which are usually secured under Spanish names and changed frequently. They also utilize the post office boxes of Nazi party members and of German commercial companies for the purpose of transmitting espionage reports.

A number of the main espionage agents have diplomatic status and are actually attached to the German Embassies as attachés. Particularly is this true of the Naval and Military Attachés. It is also noted that some of the principal espionage agents are Nazi party leaders and are known as such.

The Germans made extensive use of the Italian Lati Trans-Atlantic air line for the transmission of espionage mail and for travel of espionage agents until the Lati Line was suspended on December 18, 1941.53 The German Embassies have not hesitated to utilize the services of these clandestine radio stations in emergencies and it is [Page 220] definitely known that the German Embassy in Rio de Janeiro used the station belonging to Group I for sending messages to the Foreign Office in Berlin.

The chief types of information transmitted by these clandestine radios are: ship arrivals and departures; movement of warships of the fleets of the United States and England; information on imports and exports of the countries covered; information on United States armament and industries; political information on the area covered; weather reports; movements of airplanes of the United States, especially those being ferried to Africa via Natal; information concerning the operations of the Pan American Airways; information transmitted on behalf of the German Embassies; information on war preparation of the United States; information on the Panama Canal; information on the activities of the United States in connection with military and other aid furnished to the countries of the west coast of South America; information on the defense measures taken by the Latin American countries; details of information concerning the British base at Trinidad; information concerning maritime regulations and instructions of the United States; information regarding sabotage on English ships; military information concerning the United States, particularly concerning torpedo nets and naval installations; and information on convoys of merchant vessels.

The work done by these agents has been extremely accurate and especially harmful to the Allied powers as well as to the neutral American Republics. Millions of dollars worth of ships, merchandise, petroleum, munitions and foodstuffs have been sent to the bottom of the sea due to the efforts of these agents. Much of this property belonged to countries still on friendly relations with the Axis powers. These agents are also directly responsible for the loss of the lives of hundreds of men, women and children who died when their ships were destroyed by German torpedoes.

There are attached four memoranda setting forth in detail information concerning the identities and activities of the individuals guilty of participation in the foregoing activities which took place in Argentina. Each memorandum covers a separate group of German espionage agents operating under orders of the German High Command. For want of a better name, these groups are referred to as Group I, Group II, Group III and Group IV. It is pointed out that not all of the guilty persons have been located or identified and only the names of those are included regarding whom there is a reasonable certainty that they are to some degree guilty. These groups include the names of the following persons, many if not all of whom used code or cover names to disguise their activities: [Page 221]

  • Group I
    • Hans Napp
    • Ottomar Müller
    • Dietrich Niebuhr
    • Jose Mella Alfageme
    • Walter Freiwald
    • Elvezio Ortelli
    • Georg Hohenstein von Lug
    • Jorge Enrique Richter
    • Gustav Utzinger
    • Walter Giese
    • Martin Schneider
    • Martin Schwartz
    • Felipe David Humber
    • Enrique (Willy) Haupt
    • Domingo Sozzani
    • Victor Amilcare Testoni
    • Otto Hein
    • Egon Bunze
    • Ricardo Hoffmann
    • Compañia Din
  • Group II
    • Dietrich Niebuhr
    • Thilo Martens
    • Hans Bieben
    • Albert Wassmann
    • Viktor Mann
  • Group III
    • Rolf Edmund Stickforth
    • Rodolfo Hepe
    • Dr. Heinz Treutler
  • Group IV
    • Herman Bauer
    • Friedrich Tadeo von Schulz-Hausmann von Szymonsky
    • Ludwig Buchwald
    • Wilhelm von Pochhammer

As evidence of the activities of these agents, there are also enclosed copies of some of the messages which these groups sent to Germany via illegal radio transmitters.54 These messages are sorted according to the group which transmitted them. Inasmuch as the Germans probably are not aware that copies of these messages are in the possession of the Government of the United States, it is requested that they be regarded as strictly confidential and be treated with the greatest of care.

It is regretted that due to military exigencies it is not possible to enclose copies of the messages sent by Group IV, but it is hoped that copies can be supplied in the near future.

In addition, since the ramifications of the espionage groups in Argentina are directly connected with the success of the war effort of the United Nations and directly affect the security of the bases which the Allied powers have in various sections of this hemisphere, it is respectfully requested that the Argentine Government keep the Government of the United States informed as to the progress and findings of the action that Argentine Government takes regarding the matter.

Espionage Group I

This group of espionage agents operates in Argentina under the direction of the German High Command and in close cooperation with Captain Dietrich Niebuhr, German Naval Attaché in Buenos Aires. Although Group II is believed to be the most important espionage group as regards the whole of South America, Group I [Page 222] appears to have been the most active in Argentina. Its present chief appears to be one Hans (Juan Jacobo) Napp, who uses the code name of Berko to disguise his activities. He appears to have centered the headquarters of his activities in the Compañia Din, Calle Reconquista 331. Guillermo Scheckenbach and Osvaldo Hirner may be operating with Napp. Scheckenbach is owner of the Viena Hotel, Calle Lavalle 368, where the chief agents of Groups I and II of Argentina and Brazil met for several conferences in 1941. Napp once resided at the Hotel Viena. Osvaldo Hirner is reported to work under the orders of Scheckenbach and is located in La Plata where he obtains information regarding the arrivals and departures of refrigerator ships of the Allied nations. He was formerly an employee of the police department in La Plata. He is reported to have been responsible for the sinking of the Andalucia Star by a German submarine soon after it departed from La Plata a few weeks ago. Scheckenbach is reported to be one of the chiefs of port espionage in Buenos Aires.

Group I, which is believed to have an illegal radio transmitter in or near Buenos Aires, concerns itself with transmitting information of a strategic nature to the German High Command, this information including reports on boat arrivals and departures; movement of warships of the fleets of England and the United States; imports and exports of the countries covered; United States armament and industries; political information; weather reports; the military and naval activity of Brazil; movements of airplanes of the United States, especially those flown to Africa; and all important matters of interest to the German Government.

Attached is a résumé56 of the activities of some of the individuals believed to be involved in the affairs of Group I.

Espionage Group II

Group II, as well as the other three espionage groups known to be operating in Argentina, had its headquarters formerly in Brazil, but with the recent widescale measures of the Brazilian Government most of its agents in that country were arrested and the seat of its activities were transferred to Argentina. This same thing is true of Groups I and III.

The local chief of Group II is believed to be Captain Dietrich Niebuhr, German Naval Attaché in Buenos Aires. He uses the code name of Diego to cover his activities in this group. Although Group II is believed to be practically as large in its ramifications as Group I, it has not been possible to date to uncover as many of its agents. However, it was very active and has sent much information of a [Page 223] strategic and harmful (to the Allies) nature to the German High Command. It is believed to have a clandestine radio transmitting station at its disposal in or near Buenos Aires.

The information Group II transmitted to its superiors in Germany included: Boat arrivals and departures (but not as much as Group I); movements of United States war planes; exports and imports; movements of warships of the United States and England; military activities and preparations of the Brazilian Government; operations of Pan American Airways; political information; and information on war preparations in the United States.

Attached is a résumé57 of the activities of some of the individuals believed to be involved in the affairs of Group II.

Group III

Group III of the German espionage agents acting in Argentina under the orders of the German High Command is not indicated as having been as active as either of Groups I, II and IV. However, very little is known about this group or its leaders, and it may be for this reason that its activities appear to be less than the activities of the other groups. Suffice it to say, however, that the arrests of the principal characters of the Brazilian branch of this group have revealed that it did have an important organization in Argentina, transmitting information regarding ship movements and other Allied military activities in the hemisphere to the German High Command in Germany. At least one of the members of the Brazilian branch of Group III escaped arrest and fled to Argentina where he is now in hiding. It is possible that either Rodolfo Hepe or Rolf Edmund Stickforth may be able to clear up the mystery of his whereabouts. His name is Dr. Heinz Treutler.

The principal information transmitted by Group III concerns boat arrivals and departures; information on the British base at Trinidad; movements of British and American warships; maritime regulations and instructions of the United States; movements of American aircraft; sabotage on British boats; military information concerning the United States and particularly torpedo nets and naval installations; and information on convoys of merchant ships.

Espionage Group IV

Chief of this group in Argentina, and acting in close cooperation with the German Embassy in Buenos Aires and the other local espionage groups, is Friedrich Tadeo von Schulz-Hausmann von Szymonsky. The principal information transmitted by this group consists of data on boat arrivals and departures; information on the activities of the United States in connection with military and other aid furnished [Page 224] to the countries of the west coast of South America; information relating to the exports of the United States; information on the defense measures taken by the Latin American countries; general information from the United States; and political information, chiefly relating to Chile.

  1. None printed.
  2. See Foreign Relations, 1941, vol. vi, section under Argentina entitled “Measures taken by the United States to eliminate Axis-controlled airlines in Argentina.”
  3. None printed.
  4. Not printed.
  5. Not printed.