In 1783 Tây-Sơn rebel forces recaptured Saigon and forced Nguyễn Ánh to flee across the river to Siam. While in exile Nguyễn Ánh wished to retake Gia Định and push the Tây-Sơn rebels out. One of Anh's generals, Chau Van Tiep, convinced the peaceful King Buddha Yodfa Chulaloke of Siam to provide Nguyen Anh with support troops and a small invasion force.