Trunajaya rebellion: Dutch East India Company forces under Cornelis Speelman began an attack on Surabaya, on the island of Java.

The Trunajaya Rebellion or Trunajaya War was the ultimately unsuccessful rebellion waged during the 1670s by the Madurese prince Trunajaya and fighters from Makassar against the Mataram Sultanate and its Dutch East India Company (VOC) supporters in Java.

The United East India Company, commonly known as the Dutch East India Company, was a chartered trading company and one of the first joint-stock companies in the world. Established on 20 March 1602 by the States General of the Netherlands amalgamating existing companies, it was granted a 21-year monopoly to carry out trade activities in Asia. Shares in the company could be purchased by any citizen of the Dutch Republic and subsequently bought and sold in open-air secondary markets. The company possessed quasi-governmental powers, including the ability to wage war, imprison and execute convicts, negotiate treaties, strike its own coins, and establish colonies. Also, because it traded across multiple colonies and countries from both the East and the West, the VOC is sometimes considered to have been the world's first multinational corporation.

Cornelis Janszoon Speelman was Governor-General of the Dutch East Indies from 1681 to 1684.

The Battle of Surabaya was fought in May 1677 during the Trunajaya rebellion, in which the Dutch East India Company defeated the forces of Trunajaya and took Surabaya on behalf of its ally, the Mataram Sultanate.

Surabaya is the capital city of East Java province and the second-largest city in Indonesia, after Jakarta. Located on the northeastern corner of Java island, on the Madura Strait, it is one of the earliest port cities in Southeast Asia. According to the National Development Planning Agency, Surabaya is one of the four main central cities of Indonesia, alongside Jakarta, Medan, and Makassar. The city had a population of 2,874,314 within its city limits at the 2020 census. With 3,009,286 people living in the city as of mid 2023 and over 10 million in the extended Surabaya metropolitan area, according to the latest official estimate, Surabaya is the second-largest metropolitan area in Indonesia. Surabaya metropolitan is also ASEAN's 6th largest economy ahead of Hanoi. In 2023, the city's GRP PPP was estimated at US$150.294 billion.