Read the following text and pay attention to its structure.
Answer the questions that follow.

Admiral Keumalahayati

Orientation

    Born as Malahayati in 1550s, Keumalahayati has been called by historians as one of Indonesia's earliest national heroines.

    Keumalahayati was a descendant of the first Sultan of Aceh and the founder of the Kingdom of Aceh Darussalam, Sultan Ibrahim Ali Mughyat Syah. Since she was a child, Keumalahayati showed little interest in domestic chores. She developed her love of the sea and naval knowledge from her father, Machmud Syah, who was a respected admiral and her biggest inspiration.

A series of events

    Her mother wanted Keumalahayati to get married at young age, but she refused. Instead, she decided to pursue her dream to become an admiral. She joined the Ma'had Baitul Maqdis Military Academy where she met the man who would later become her husband, navy cadet Zaenal Abidin. Their love story had a tragic ending. Not long after the couple's marriage, Zaenal was killed during a sea battle against the Portuguese.

    Even more determined to continue Zaenal's fight against European colonizers, Keumalahayati made a request to the then Sultan of Aceh, Alaiddin Riayat Syah Al Mukammil, to form her own army. Soon, she gathered 2,000 women whose husbands had died during the war against the Portuguese to train and base them in Teluk Haru (Haru Bay). This women army was known as the Inong Bale.

    In 1599, a Dutch expedition led by Cornelius de Houtman arrived at the port of Aceh. The Sultan had initially welcomed them with open arms, hoping to establish a good relationship with the Dutch. However, a conflict soon grew between them and the Dutch decided to attack the Acehnese. Keumalahayati led her Inong Bale army to fight against de Houtman's forces and killed him in September 1599.

Conclusion

    This success in battle earned Keumalahayati the title of Admiral - the first woman in Nusantara to get it.

Adopted from: https://jakartaglobe.id/culture/acehs-wonder-woman-admiral-keumalahayati/ (July 19, 2019)

What is the significant event described in the text?