Regreg War

Regreg war
Date	1404 – 1406
Location	Majapahit, East Java
Result	Trowulan victory
Belligerents
Western court (Trowulan)	Eastern court (Lamajang)
Commanders and leaders
Wikramawardhana	Bhre Wirabhumi †
Casualties and losses
Light	Heavier; Soldiers, Bhre Wirabhumi and his family, including Chinese envoys that visited the eastern court

The Regreg War (often erroneously called the Paregreg) was a civil war that took place in 1404–1406 within the Javanese empire of Majapahit. The conflict was fought as a war of independence between the Western court led by Wikramawardhana against the breakaway Eastern court led by Bhre Wirabhumi. This war of rivalry and secession had caused calamity, crisis, court's preoccupation, the drain of financial resources, and exhaustion, which is thought to be one of the causes of Majapahit's decline in the following years.