Defection of Teuku Umar (late March 1896)

The Defection of Teuku Umar (late March 1896) — known in the source as the afval van Toekoe Oemar — was the abandonment of the Dutch colonial cause by Teuku Umar — Toekoe Djohan Pahalawan, Panglima Prang Besar of the Government, territorial chief of Lepong — on approximately 26 March–29 March 1896, the central event of the first semester of the Atjeh-oorlog and the immediate trigger of the Dutch military collapse that culminated in the wholesale evacuation of the buitenlinie and the dispatch of Lt.-Gen. Vetter as Regeeringscommissaris. Umar turned his Dutch-supplied arms against his patrons, wrote three letters (of 30 March, 12 April, and 23 April 1896) to the Governor of Atjeh explaining his defection and demanding ƒ150,000 per month and a Royal decoration (“kruis”), and was formally dismissed from his two posts by the 11 (No. 159). As described in Kruisheer’s ATJEH ‘96, the defection “was, as it were, set on loose screws” — set, as it were, on loose screws — everything that had been gained since 1893.

Background

Umar had been the keystone of Gen.-Maj. Deykerhoff’s policy of native allied warfare since his subjection of 30 September 1893. His legioen of 250 paid warriors, armed and provisioned by the Government, had stormed Ana’ Galong in November 1893 and had been the principal Dutch instrument in the western mukims through 1894 and 1895. By the spring of 1896 Umar had been further entrusted with the leadership of the XXVI Moekims and had been given, on loan (bruikleen), additional weapons and ammunition for a specific operation against the recalcitrant Lamkrak mukims.

The signs of impending defection were multiple. Umar failed to return the weapons and ammunition that had been lent to him for the Lamkrak operation. He constructed verschanzingen and field-works and fortifications opposite the Dutch post at Lam-Djamoe — works whose only plausible purpose was to threaten the post. Several of his followers went over to the resistance. Controleur Gisolf formally warned the Governor of Umar’s “more than suspicious attitude,” and advised that the Panglima Prang besar be arrested. Deykerhoff, however, “in any case little inclined to give credence to the various reports” (in any case little inclined to give credence to the various reports), refused. Umar had, in Kruisheer’s words, “the audacity” (the brass) to attend a conference at the Governor’s office on 28 March 1896, where his affability so convinced Deykerhoff of his good faith that the Governor did not even consider the advice of his subordinates to arrest him.

The Defection

Within hours of the conference of 28 March 1896, the defection was open. The siege of blokhuis Aloer Oe began on the night of 28 March–29 March 1896. The posts of Biloel and Lamkoenjit were simultaneously invested and cut off. Hostile bands, armed in part with Dutch-supplied Beaumont and repeater rifles, swarmed over the western buitenlinie. By 30 March 1896 Umar was in open correspondence with the Dutch, and the colonial administration was beginning to grasp the scale of the disaster. On 30 March 1896 — the very day after the fall of Aloer Oe — Umar wrote his first letter to the Governor of Atjeh, setting out his grievances and his demands.

The grievances alleged in the three letters (of 30 March, 12 April, and 23 April 1896) were, in essence, that the Controleur te Oleh-leh and the hoofddjaksa Mohamad Arief had insulted him. The demands were altogether more substantial: Umar required a Royal decoration — “kruis” (a cross, i.e., a Dutch royal order of chivalry) — and a monthly subsidy of ƒ150,000 to maintain his warriors. The figure was astronomical — many times the entire annual budget of the Atjeh government — and was understood by all parties as a deliberate insult, the equivalent of a declaration of war. Umar’s letters are preserved, in Dutch translation, in the Bijlagen of ATJEH ‘96.

The Three Letters and the Government Response

The three letters were answered, in effect, by the 11 — Besluit No. 159 of the acting Civiel en Militair Gouverneur — which dismissed Umar from both his posts: as Panglima Prang Besar of the Government and as hoeloebalang of Lepong. The same resolution stipulated that he would henceforth be officially designated by his original name, Toekoe Oemar — a symbolic stripping of the honours conferred by the Government Resolution of 5 September 1893. The dismissal was authorised by Government Telegram of 26 April 1896, No. 409. On 27 April 1896 Lt.-Gen. Vetter, by now arrived as Regeeringscommissaris, issued a proclamation announcing that military operations would be undertaken against the former ally.

The Military Consequences

The immediate military consequences of the defection were the siege of Aloer Oe and the concurrent sieges of Biloel and Lamkoenjit, the relief operation of 8 April 1896 under Kol. Stemfoort, and the evacuation of Biloel and Lamkoenjit on 12 April 1896. The entire western buitenlinie was evacuated by 17 April, and the remainder of the buitenlinie by 20 April. Vetter arrived as Regeeringscommissaris on 7 April 1896 aboard the steamer or Bantam; Deykerhoff was honorably relieved of his functions on the same day. A wholesale Dutch counter-offensive followed, beginning with the tuchtiging of Lam Goet on 14 April and culminating in the three-day offensive of 23–25 May 1896 against Umar’s stelling at Lam-Pisang and the capture and destruction of his house on 24 May 1896.

Significance

The defection of Teuku Umar was the pivotal event of the first semester of 1896 and one of the great crises of the Atjeh-oorlog. It transformed what had been a counter-insurgency campaign fought largely with native auxiliaries into a conventional war against a unified Achehnese enemy armed with Dutch weapons and trained in Dutch methods. The strategic edifice constructed by Gen.-Maj. Deykerhoff between 1893 and 1896 — the Legioen van T. Djohan, the buitenlinie, the network of allied hoeloebalang — collapsed in less than a month. The political consequences reached Batavia and The Hague: Deykerhoff was dismissed; Vetter, the Lieutenant-General and Army Commander, was dispatched with full powers as Regeeringscommissaris; and the entire Dutch strategy in Atjeh was overhauled. The defection also marked the emergence of Tjoet Nja Din — Umar’s wife, who would herself become a legendary resistance leader — as a figure of central importance in the war.

Sources

De Atjeh-Oorlog: Kort Overzicht van Oorsprong, Verloop en Gevolg, door J. A. Kruijt. ‘s-Gravenhage: Loman & Funke, 1896. Chapter XII (the plan and the defection), Chapter XIII (the counter-offensive and Kruijt’s judgement). OCR-filename: 20260716_140310_DLP-101-De_Atjeh_oorlog_Nemotron-OCR-v2_OCR.txt, pp. 72–74. De Buitenbezittingen 1904 tot 1914, Deel I, bewerkt door het Encyclopaedisch Bureau, Mededeelingen van het Bureau voor de Bestuurszaken der Buitenbezittingen, Aflevering X (Weltevreden: Landsdrukkerij, 1917), p. 2 (Bestuurs-organisatie), p. 68 (section “De Atjeh-tram”).

Source

ATJEH ‘96, door A. Kruisheer, Kapitein der Infanterie O.I.L., met 2 kaarten en 4 portretten (Weltevreden: N.V. Boekhandel Visser & Co, 1913). Instituut Kern, Leiden. OCR-filename: 20260715_163243_DLP-89-Atjeh_96_Met_2_kaarten_en4_DOORA_KRUISHEER_Kapiteinder_Infanterie_nemoretriever-ocr-v1_OCR.txt, pp. 42, 49–50, 56–59, 68, 71, 138, 142, 296, 319, 337–348.

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