Jahnke is a subject named in General Swart, Pacifier of Atjeh (1943) by M. H. du Croo, in connection with the history of Atjeh and the governorship of H. N. A. Swart.
Account in du Croo’s Generaal Swart (1943)
From Langsa
Then I went at once by tram with Colijn eastward as far as Langsa, to get an impression for myself. The financial prosperity of the sub-division treasuries of Tamiang and Langsa was founded on the estate area created on the east coast after 1910. In 1917 an Acehnese in a fit of religious mania attacked Messrs Jahnke and Roberecht at Langsa; Jahnke died of his injury.
From 1917
In 1917 Tgk. di Mata Ië, last of the three great resistance leaders of the north coast, was killed near Samarkilang on 10 July; a leper murdered the officier van gezondheid dr. J. Ph. Andriesse at Lho’ Soekon; at Langsa an Acehnese killed Jahnke in a fit of religious mania. In December a religious movement at Serbödjadi under Penghoeloe Koeala cost the gezaghebber of Lököp his life, and on 29 December lieutenant G. F. P. Gosenson was gravely wounded at Djeuram in an attack organised by Tgk. Poeti’. “More and more the population is applying itself to the planting of rubber”, the Koloniaal Verslag recorded.
See Also
Source
Generaal Swart, Pacificator van Atjeh (“General Swart, Pacifier of Atjeh”), by M. H. du Croo, Colonel K.N.I.L. (retired), with the collaboration of H. J. Schmidt, Titular Colonel K.N.I.L. (retired), with a foreword by His Excellency Lieutenant-General K.N.I.L. (retired) G. K. Dijkstra (Maastricht: N.V. Leiter-Nypels, 1943), passim.