The most important was “The British Contribution to Medicine” that studied the investigations and discoveries of several Nobel laureates: penicillin, by Alexander Fleming; malaria, by Ronald Ross; paludrine, by F. H. Curd, D. G. Davey, and F. L. Rose; vitamins, by Gowland Hopkins; and stilboestrol, by Robert Robinson and Charles Dodds.

In 1938, the liberal president Alfonso López Pumarejo appointed Jaime Jaramillo Arango as Minister Plenipotentiary of Colombia to Germany.

[16] But, on November 9, the Nazi paramilitary squadrons began brutally attacking the Jewish population and their stores, known as Kristallnacht: the initiation of the open persecution of Jews by the Third Reich.

[17] The following day, November 10, Ambassador Jaramillo, and his assistant were arrested because they had been taking pictures of the impressive damage in Kurfürstendamm, from the diplomatic automobile.

[16][18][8][9] Following Kristallnacht, on November 24, 1938, Jaramillo Arango left Germany and exiled himself, first in France, and then in England, where he was assigned as Minister Plenipotenciary to the United Kingdom until 1945.

[16] The official report of Ambassador Jaramillo appeared later in special articles and books about Kristallnacht;[16][19] and the pictures taken that described the horror of the events on November 9, 1938, were exposed 75 years later in a commemorative exhibition in the New Synagogue of Berlin, in 2013.

[22] Amid the expansion of the Third Reich across Europe, president Eduardo Santos named him as Minister Plenipotentiary to Great Britain, from September 1940 to 1945.

He was appointed also as Minister Plenipotentiary to the Governments in Exile, Poland, Belgium, Denmark, the Netherlands, and Norway, based in the British capital.

In his speech, Ambassador Jaramillo Arango remembered the physical and spiritual famine in Europe, the teachers killed, and the buildings, universities and monuments destroyed during the war.