Java War

The Java War, known in Indonesia as the Diponegoro War, was fought in central and eastern Java from 1825 to 1830 between Javanese rebels led by Prince Diponegoro of Yogyakarta and the colonial government of the Dutch East Indies, which was backed by some of the Javanese princely courts. It ended with Diponegoro's capture and exile. The war devastated much of Java, left the Dutch in full control of the island and is remembered in Indonesia as an early chapter in the struggle against colonial rule.

Since the Treaty of Giyanti in 1755, central Java had been divided between the princely states of Yogyakarta and Surakarta, which enjoyed real autonomy while Dutch power was weak. That changed in the early nineteenth century. The Dutch governor-general Herman Willem Daendels, appointed in 1806, imposed colonial authority harshly, and during the British occupation of Java from 1811 the Yogyakarta palace was sacked in 1812, its sultan deposed, and land and troops taken from the courts. When the Dutch returned in 1816, disputes over taxes, land rents and court politics continued.

Prince Diponegoro, born in 1785, was the eldest son of Sultan Hamengkubuwono III. A deeply religious man, he wrote of visions that foretold the ruin of Java and later urged him towards holy war. After his father's death and that of the next sultan, he became one of the guardians of the infant Hamengkubuwono V, but he was sidelined at court and humiliated by the Dutch resident, A. H. Smissaert. Unrest was spreading in the countryside, fed by a cholera epidemic in 1821 and an eruption of Mount Merapi in 1822. In mid-1825 the Dutch ordered a road built past Diponegoro's estate at Tegalreja. Clashes followed, and on 20 July troops sent to arrest him were driven off. He withdrew to the cave of Selarong and declared his rebellion the next day.

Many nobles and villagers rallied to him, and his forces besieged Yogyakarta until Dutch relief columns under General Hendrik Merkus de Kock broke the siege in September 1825. Risings also broke out on the north coast and in East Java, where some rebel forces were led by women such as Nyi Ageng Serang. In 1826 Diponegoro advanced towards Surakarta, but he was defeated at Gawok on 15 October. The conflict became a guerrilla war, in which the rebels controlled much of the countryside while the Dutch suffered from disease and shortages of men. Rebel forces also attacked Chinese communities, as at Ngawi in 1825, an episode that long affected relations between Javanese and Chinese.

From 1827 de Kock built a network of small forts, the Benteng-stelsel, to secure roads and gradually confine the rebels. More than 250 were constructed during the war. Rebel support weakened under the hardships of war, key leaders such as Kyai Maja surrendered or were captured, and in September 1829 Diponegoro's remaining forces were defeated at Siluk. His commander Sentot gave up in October. In March 1830 Diponegoro went to Magelang to negotiate with de Kock and was arrested there on 28 March. He was exiled to Sulawesi and died in Makassar in 1855.

The human cost was enormous. At least 200,000 Javanese civilians are estimated to have died from violence, disease and famine, while military deaths numbered around 15,000 on the Dutch side, including 8,000 Europeans, and up to 20,000 among the rebels. The Dutch annexed much of the remaining territory of the princely states, which ceased to be a threat. To recover the war's heavy cost, the new governor-general Johannes van den Bosch introduced the Cultivation System of forced crop production, which brought huge profits to the Netherlands. Java saw no comparable armed challenge to Dutch rule until the Indonesian National Revolution of the 1940s, and Diponegoro was declared a National Hero of Indonesia in 1973.

Our 1815 map shows Java on the eve of the war, as the Dutch were about to return, and the 1878 map shows the island under consolidated Dutch rule.