[2] Philippe Vannier entered the service of Nguyễn Ánh in 1789 following the encouragements of Mgr Pigneau de Béhaine.

[2] In 1800, Philippe Vannier was commander of the Phoenix (Phuong-Phi), the largest ship of Nguyễn Ánh's navy, with 26 guns and 300 men.

[2][4] In April 1801, he again fought in front of the harbour of Qui Nhơn, and was nominated General (Brigadier) of the Navy.

[2] After the end of the war in 1802 and the victory of Nguyễn Ánh, Philippe Vannier remained in the service of the Vietnamese emperor, as a Mandarin.

[4] One of their grandsons, Emile Vannier, was a Navy officer who participated to the Cochinchina campaign in 1863–1864, and died in 1885.