Cham Sack of Angkor (1177): Champa's Raid on the Khmer Capital

The Cham sack of Angkor in 1177 was one of the most dramatic events in the history of the Khmer Empire. A fleet from Champa, a kingdom on the coast of present-day Vietnam, sailed up the Mekong River and across the Tonle Sap lake, plundered the Khmer capital of Yasodharapura and killed its king. The disaster opened the way for Jayavarman VII, who expelled the invaders and rebuilt the capital on a grand scale.

Background: Khmer and Cham rivals

Champa was a group of Cham-speaking principalities along the central and southern coast of Vietnam, with an Indian-influenced culture similar in many ways to that of the Khmer. The two powers had fought intermittently for centuries over trade, land and prestige.

In the 12th century the Khmer king Suryavarman II, builder of Angkor Wat, waged aggressive wars against Champa. In 1145 his armies occupied the Cham capital Vijaya and installed a puppet ruler. The Chams eventually recovered their independence, but the conflict left a strong desire for revenge.

After Suryavarman II’s death around 1150, the Khmer kingdom was unstable. Around 1165 a high official seized the throne and ruled as Tribhuvanadityavarman. The prince who would become Jayavarman VII was away in Champa at the time and did not immediately challenge the usurper.

Jaya Indravarman IV prepares

Jaya Indravarman IV became king of Champa around 1167. According to Chinese sources, he looked for military advantages over the Khmer. In 1171 a Chinese officer shipwrecked on the Cham coast is said to have taught the Chams to fight with crossbows from horseback, and they tried, without success, to buy horses from China.

An attack by land produced no decisive result. Jaya Indravarman then turned to the water. The Khmer heartland around Angkor lay on the northern shore of the Tonle Sap, the great lake connected to the Mekong, and could be reached by boat from the sea.

The raid of 1177

In 1177 a Cham war fleet sailed up the Mekong, entered the Tonle Sap River and crossed the lake, apparently taking the Khmer by surprise. The Cham force attacked Yasodharapura, the royal city at Angkor, plundered its treasures and killed King Tribhuvanadityavarman.

The Chinese accounts present the attack as a complete humiliation for the Khmer. Modern historians accept that a major Cham raid took place and that the Khmer king died, but note that the sources are brief and written from a distance. The great stone temples, including Angkor Wat, show no sign of large-scale destruction; what suffered most were the city’s wealth, its wooden buildings and royal prestige.

Jayavarman VII’s counter-attack

The prince who became Jayavarman VII returned to lead the resistance. Over the following years Khmer forces defeated the Chams, including in a naval battle that tradition places on the Tonle Sap. Reliefs on the Bayon and at Banteay Chhmar show Khmer and Cham warriors clashing in boats, recognisable by their different helmets and dress, although it is not certain that they depict one specific battle.

Having cleared the invaders and overcome internal rivals, Jayavarman VII was crowned in 1181. He then rebuilt the capital as the walled city of Angkor Thom, with the Bayon at its centre, and founded great temple-monasteries such as Ta Prohm.

Revenge on Champa

Jayavarman VII carried the war back to Champa. In 1190 his army, helped by Cham allies, captured Vijaya and took Jaya Indravarman prisoner. Champa was divided between rulers dependent on the Khmer, and from 1203 to about 1220 it was effectively governed as a Khmer province. Khmer forces withdrew only after Jayavarman VII’s death.

The long cycle of war between the two kingdoms then eased. Both faced new pressures in the 13th century: Champa from the Vietnamese state of Dai Viet and the Mongol Yuan dynasty, and the Khmer from the rising Thai kingdoms to the west.

Myths and facts

• Myth: Angkor Wat was destroyed in 1177. There is no evidence for this; the raid targeted the royal city and its riches, not the stone temples.
• Myth: the Bayon relief is a picture of the 1177 battle. The reliefs certainly show Khmer–Cham naval warfare, but linking them to a single dated battle is an interpretation.
• Fact: the sack was a serious blow that ended a reign and showed how vulnerable Angkor was to attack by water.

Timeline

• 1145: Suryavarman II’s armies occupy the Cham capital Vijaya.
• c. 1150: Death of Suryavarman II.
• c. 1165: Tribhuvanadityavarman seizes the Khmer throne.
• c. 1167: Jaya Indravarman IV becomes king of Champa.
• 1177: The Cham fleet sacks Yasodharapura and kills the Khmer king.
• 1181: Jayavarman VII is crowned after expelling the Chams.
• 1190: Khmer forces capture Vijaya.
• 1203–c. 1220: Champa is under Khmer control.

Why it matters

The Cham sack of 1177 was a turning point for the Khmer Empire. It exposed the weakness of the old order and brought to power Jayavarman VII, whose reign saw the greatest building programme in Angkor’s history and a shift towards Mahayana Buddhism. It also shows how rivers and lakes linked, and endangered, the states of mainland Southeast Asia.