Kuehn Family

The Kuehn family was a German family associated with espionage for Nazi Germany's military intelligence service, the Abwehr, and with Japanese intelligence operations in Hawaii before and during the Second World War. The central figure was Bernard Julius Otto Kühn, whose name is also rendered as Kuehn or Kuhn. Born in 1894 or 1895, Kühn was linked to Propaganda Minister Joseph Goebbels and was recruited into an intelligence role connected with Japan. In 1935, Goebbels reportedly arranged for Kühn to work for Japanese intelligence in Hawaii. Kühn accepted the assignment and moved to Honolulu with his family on August 15 of that year. The household included Kühn, his wife Friedel, their daughter Susie Ruth, her half-brother Hans Joachim, and, elsewhere in accounts of the family, their son Eberhard. Ruth had previously been associated with Goebbels, who discovered that she was partly Jewish. The family's relocation to Hawaii has therefore been described both as an intelligence posting and as a way for Goebbels to remove Ruth from Germany's increasingly racialized political environment. Because several members participated in gathering or transmitting information, contemporary descriptions referred to them as an "eight-eyed spy" group. The family established itself in Honolulu and collected information about American military activity. Ruth dated U.S. military personnel and operated a beauty salon whose low prices and popularity attracted the wives of senior officers. The salon provided access to informal conversations about military movements and schedules. Bernard Kühn observed ships and aircraft during drives with Hans, while a dormer window overlooking Pearl Harbor allowed the family to watch activity in the harbor using powerful binoculars. Friedel recorded information collected by the household. Kühn also developed a signaling arrangement in which a bright light from the attic communicated coded messages to Japanese operative Takeo Yoshikawa, who arrived in Honolulu before the attack on Pearl Harbor. The operation was monitored by the Federal Bureau of Investigation for several years. Investigators knew that the family made repeated trips to Japan, received Japanese visitors, and appeared to accept Japanese payments, but they lacked evidence sufficient to arrest the family before the United States entered the war. The Kuehns continued to transmit information to Japanese contacts, including observations of American forces. Their intelligence was later characterized by a Japanese agent as of limited value, and Kühn was criticized as an ineffective spy who took unnecessary risks. After the Japanese attack on Pearl Harbor on December 7, 1941, martial law was declared in Hawaii and the FBI detained people on its surveillance lists. Bernard and Friedel were arrested that night, with $5,000 found concealed on Friedel. Ruth, who was married by then, was detained separately; investigators found $2,000 sewn into her curtains. Eberhard was also arrested despite being sixteen and apparently unaware of the espionage work. Documents recovered from the Japanese consulate included notes describing Kühn's signaling system. Under interrogation, Bernard confessed, while Friedel and Ruth did not admit involvement. Kühn was tried before a military commission beginning on February 19, 1942. He was sentenced on February 21 to death by musketry, but the sentence was commuted to fifty years of hard labor because of uncertainty over the legal basis for trying espionage conducted during peacetime. In 1946, his sentence was reduced to permit deportation. He remained confined at Ellis Island until July 29, 1948, then voluntarily departed for Buenos Aires on December 3. He returned to Germany in 1955 and died of cancer in 1956. Friedel and Ruth were interned for the remainder of the war and deported to Germany in 1945. Hans was repatriated with his mother. Eberhard identified with the United States, stayed in Hawaii, graduated from high school there in 1944, joined the U.S. Army, served in the Okinawa campaign, and received a Bronze Star. The family's story has continued to receive historical and media attention through archival preservation, a later family memoir, and broadcast coverage. The University of Hawaii archives holds a collection of family papers assembled by sociologist Bernhard L. Hormann, including correspondence written during and after the family's internment at the Hawaiian Island Detention Camp on Sand Island.

The Kuehn family became historically significant because multiple members participated in an espionage network connected to Nazi Germany and Japan in Hawaii. Bernard Julius Otto Kühn, whose surname appears in sources with both an umlaut and variant spellings, served the Abwehr and maintained ties to Joseph Goebbels. In 1935, Goebbels offered him work with Japanese intelligence in Hawaii. Kühn moved to Honolulu on August 15 of that year with his wife Friedel, daughter Susie Ruth, and Hans Joachim, Ruth's half-brother. The wider family also included Eberhard. The relocation had a political and personal dimension. Goebbels had learned that Ruth was half Jewish, a dangerous status under Nazi racial policy, and sending the family abroad removed her from Germany while also placing Kühn in a useful overseas position. In Honolulu, the family operated as a small intelligence unit. Ruth's beauty salon attracted military families and gave her access to conversations about the movements of U.S. personnel. Bernard watched Pearl Harbor from the family's property, counted ships and aircraft, and used binoculars from a specially constructed dormer window. Friedel documented information gathered by the household. Bernard also communicated with Japanese contacts through coded messages and flashes of light from the attic. The arrival of Japanese agent Takeo Yoshikawa increased the importance of the family's reporting channel. Kühn used the signaling arrangement to convey observations about American naval activity. Japanese assessments later suggested that the information was not especially valuable and that Kühn lacked the discipline expected of a skilled spy. Nevertheless, the family continued its work despite mounting exposure risks. The FBI had tracked the household for years. Frequent travel to Japan, Japanese visitors, and unexplained payments placed the family under suspicion, but investigators did not possess enough evidence to make arrests before the Pearl Harbor attack. On December 7, 1941, the family watched the attack from its home while continuing to transmit information. After martial law was imposed, authorities moved against people already on intelligence watch lists. Bernard and Friedel were arrested that evening, and money was found hidden on Friedel. Ruth was detained at her own residence, where investigators found additional concealed cash. Eberhard was arrested even though he was a minor and did not appear to understand the operation. Evidence found among materials the Japanese consulate attempted to destroy described Bernard's light-based signaling method. Interrogators obtained his confession, but Friedel and Ruth denied wrongdoing. Bernard's military trial opened on February 19, 1942, and he received a death sentence two days later. The sentence was commuted to fifty years with hard labor because of uncertainty over whether a military proceeding could validly punish espionage conducted before the United States entered the war. In 1946, the sentence was reduced to allow deportation. After confinement at Ellis Island, Kühn left for Buenos Aires in December 1948, returned to Germany in 1955, and died of cancer in 1956. Friedel and Ruth remained interned through the war and were deported to Germany in 1945, while Hans was repatriated with his mother. Eberhard remained in the United States, completed school in Hawaii, served in the U.S. Army on Okinawa, and received a Bronze Star. Subsequent historical interest has focused on the family's divided loyalties, the role of civilian social settings in intelligence collection, and the legal treatment of espionage during the transition from peacetime to wartime. The preservation of the Kuehn papers at the University of Hawaii, together with later family writing and broadcast reporting, has kept the episode in public memory.

• 1981

  Family papers enter university archives

  [1]Kuehn familyen.wikipedia.org

  The Hormann collection of Kuehn family papers was donated to the University of Hawaii archives.

• 1948

  Deportation to Argentina

  [1]Kuehn familyen.wikipedia.org

  After confinement at Ellis Island, Kühn voluntarily left the United States for Buenos Aires on December 3.

• 1942

  Military conviction of Bernard Kühn

  [1]Kuehn familyen.wikipedia.org

  Kühn was sentenced to death by a military commission, with the punishment later commuted to fifty years of hard labor.

• 1941

  Arrest after Pearl Harbor

  [1]Kuehn familyen.wikipedia.org

  U.S. authorities detained several family members after the attack and found concealed money and evidence associated with the family's intelligence activities.

• 1935

  Relocation to Honolulu

  [1]Kuehn familyen.wikipedia.org

  Bernard Kühn accepted an intelligence-related assignment connected with Japan and moved to Honolulu with his family on August 15.

Not a commercial brand; the name identifies a historical espionage family and its documented wartime activities.

• 1941

  Espionage and collaboration with Japanese intelligence

  The family was accused of gathering military information in Hawaii and passing coded reports to Japanese contacts while associated with Nazi Germany's Abwehr.

  Source

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• 1942

  Commutation of Bernard Kühn's death sentenceOther

  Background

  A military commission imposed a death sentence, but the legal basis for trying prewar espionage in that forum was considered uncertain.

  Action taken

  The Hawaii military governor commuted the sentence to fifty years in prison with hard labor.

  Aftermath

  The sentence was later reduced to permit deportation, and Kühn ultimately left for Argentina in 1948.

  Source

• 1935

  Acceptance of the Hawaii intelligence assignmentStrategy

  Background

  Bernard Kühn was offered work connected with Japanese intelligence while maintaining ties to the German intelligence apparatus.

  Action taken

  He moved his family to Honolulu and established a household-based information-gathering operation.

  Aftermath

  The family remained under FBI observation and was arrested after Pearl Harbor.

  Source

1. 1Kuehn familyen.wikipedia.org