Spring 1850: Left for the north of the country where his bishop gave him the task of evangelizing to Son Tay.

May 1, 1851: Schoeffler was beheaded at Son Tay.

We are going to rescue 70 American prisoners of war, maybe more, from a camp called Son Tay.

Son Tay lay a few kilometres to the south of the Red River.

Even if an attacker crossed these obstacles and breached the curtain wall, he still had to capture the central citadel of Son Tay.

On 13 December both columns met five kilometres from the forward defences of Son Tay.

Belin's men needed rest, and Courbet postponed the battle for Son Tay to the following day.

In December 1883 he struck at Son Tay.

French casualties at Son Tay were 83 dead and 320 wounded.

The French were no nearer to Son Tay than they had been before the battle.