Trunajaya's North Coast offensive

Part of the Trunajaya rebellion

Date	October 1676 – January 1677
Location	North Coast of Java, between Surabaya and Cirebon (in today's Indonesia)
Result	Rebel victory

Belligerents

Mataram Sultanate

Dutch East India Company (VOC)

Rebel forces

Commanders and leaders

Wangsadipa

Strength

unknown

9,000

Mataram Sultanate

After his victory at the Battle of Gegodog (October 1676) in northeast Java, the Madurese rebel leader Trunajaya proceeded westwards to conquer Mataram Sultanate's remaining towns on the north coast of Java (also known as the Pasisir, today part of Indonesia). By January 1677, nearly all coastal towns from Surabaya to Cirebon (except Jepara) were taken.

The Trunajaya rebellion began in 1674 as Trunajaya's forces conducted raids against the cities under Mataram control. In 1676, a rebel army of 9,000 invaded East Java from their base in Madura, and took Surabaya – the principal city of East Java – shortly after. Mataram King Amangkurat I sent a large army to oppose him under the Crown Prince (later Amangkurat II), but this army was decisively defeated on 13 September at the Battle of Gegodog in northeast Java. After Gegodog, the Javanese north coast was open to Trunajaya's forces.

The rebel forces quickly proceeded westwards after the victory. The Javanese northern coastal region – also known as the Pasisir – contained many trading towns, such as Surabaya (already taken by Trunajaya before Gegodog), Tuban, Juwana, Pati, Jepara, Semarang and Kendal.

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