The Second Opium War (1856–1860) was fought to guarantee European sovereignty of the seas after a Chinese-owned and British-registered ship, The Arrow, was seized in 1856 for being involved in smuggling and piracy.
A naval force under the command of Admiral Sir James Hope shelled the forts guarding the mouth of the Peiho river.
On 13 August 1860 during the march on the Taku Forts, a party of Sikh sappers and some laborers transporting their column's rum rations were captured by a force of Tartar cavalry.
The next day the prisoners were brought before a local mandarin and were ordered to kow-tow, under penalty of torture or execution if they did not comply.
Garnet Wolseley, who was present at the taking of the Taku forts, insists that "The man belonging to the Buffs was either killed, or 'died of drink,' as the Chinese say."
"His mind, indeed, seemed to be unbalanced, as in addition to the untruths he told, he talked utter nonsense about what he pretended he had overheard his captors say.