sentences:  When Nguyễn Ánh was preparing his march to Saigon, he offered to make an alliance with the Kiến Hòa army, but Võ Tánh refused.The next year, in 1788, Võ Tánh decided to join Nguyễn Ánh's side and integrated his entire army into the Nguyễn army.Later, Nguyễn Ánh bestowed Võ Tánh the position of Khâm sai Chưởng Cơ Tiên Phong Doanh(欽差掌奇先鋒營 - Imperial Commissioner, Vanguard Regiment Commander) and married off his sister, princess Ngọc Du, to the commander.