The Second Opium War, the Second Anglo-Chinese War, the Second China War, the Arrow War, or the Franco-British expedition to China, was a war pitting the British Empire and the Second French Empire against the Qing dynasty (present day China), lasting from 1857 to 1860.
"Second War" and "Arrow War" are both used in literature. "Second Opium War" refers to one of the British tactical objectives: legalising the opium trade, expanding coolie trade, opening all of China to British merchants, and exempting foreign imports from internal transit duties. The "Arrow War" refers to the name of a vessel which became the starting point of the conflict.
The war followed on from the First Opium War. In 1842, the Treaty of Nanking—the first of what the Chinese later called the unequal treaties—granted an indemnity and extraterritoriality to Britain, the opening of five treaty ports, and the cession of Hong Kong Island. The failure of the treaty to satisfy British goals of improved trade and diplomatic relations led to the Second Opium War (1856–60). In China, the war is considered[by whom?] as the beginning of modern Chinese history.
Between the two wars, repeated acts of aggression against British subjects led in 1847 to an expedition which assaulted and took, by a coup de main, the forts of the Bocca Tigris resulting in the spiking of 879 guns.:501
The Illustrated London News print of the clipper steamship Ly-ee-moon, built for the opium trade, c. 1859
The 1850s saw the rapid growth of Western imperialism. Some of the shared goals of the western powers were the expansion of their overseas markets and the establishment of new ports of call. The French Treaty of Huangpu and the American Wangxia Treaty both contained clauses allowing renegotiation of the treaties after 12 years of being in effect. In an effort to expand their privileges in China, Britain demanded the Qing authorities renegotiate the Treaty of Nanking (signed in 1842), citing their most favoured nation status. The British demands included opening all of China to British merchant companies, legalising the opium trade, exempting foreign imports from internal transit duties, suppression of piracy, regulation of the coolie trade, permission for a British ambassador to reside in Beijing and for the English-language version of all treaties to take precedence over the Chinese language.
To give Chinese merchant vessels operating around treaty ports the same privileges accorded British ships by the Treaty of Nanking, British authorities granted these vessels British registration in Hong Kong. In October 1856, Chinese marines in Canton seized a cargo ship called the Arrow on suspicion of piracy, arresting twelve of its fourteen Chinese crew members. The Arrow had previously been used by pirates, captured by the Chinese government, and subsequently resold. It was then registered as a British ship and still flew the British flag at the time of its detainment, though its registration had expired. Its captain, Thomas Kennedy, who was aboard a nearby vessel at the time, reported seeing Chinese marines pull the British flag down from the ship. The British consul in Canton, Harry Parkes, contacted Ye Mingchen, imperial commissioner and Viceroy of Liangguang, to demand the immediate release of the crew, and an apology for the alleged insult to the flag. Ye released nine of the crew members, but refused to release the last three.
On 23 October the British destroyed four barrier forts. On 25 October a demand was made for the British to be allowed to enter the city. Next day the British started to bombard the city, firing one shot every 10 minutes. Ye Mingchen issued a bounty on every British head taken. On 29 October a hole was blasted in the city walls and troops entered, with a flag of the United States of America being planted by James Keenan (U.S. Consul) on the walls and residence of Ye Mingchen. Losses were 3 killed and 12 wounded. Negotiations failed and the city was bombarded. On 6 November 23 war junks attacked and were destroyed. There were pauses for talks, with the British bombarding at intervals, fires were caused, then on 5 January 1857, the British returned to Hong Kong.
The British government lost a Parliamentary vote regarding the Arrow incident and what had taken place at Canton to the end of the year on 3 March 1857. Then there was a general election in April 1857 which increased the government majority.
In April, the government asked the United States of America and Russia if they were interested in alliances, the offers were rejected. In May 1857, the Indian Mutiny became serious. Troops destined for China were diverted to India, which was considered the priority issue.
France joined the British action against China, prompted by complaints from their envoy, Baron Jean-Baptiste Louis Gros, over the execution of a French missionary, Father Auguste Chapdelaine, by Chinese local authorities in Guangxi province, which at that time was not open to foreigners. 
The British and the French joined forces under Admiral Sir Michael Seymour. The British army led by Lord Elgin, and the French army led by Gros, together they attacked and occupied Canton (Guangzhou) in late 1857. A joint committee of the Alliance was formed. The Allies left the city governor at his original post in order to maintain order on behalf of the victors. The British-French Alliance maintained control of Canton for nearly four years.
The United States and Russia sent envoys to Hong Kong to offer help to the British and French, though in the end Russia sent no military aid.
The U.S. was involved in a minor concurrent conflict during the war, although they ignored the UK's offer of alliance and did not coordinate with the Anglo-French forces. In 1856, the Chinese garrison at Canton shelled a United States Navy steamer; the U.S. Navy retaliated in the Battle of the Pearl River Forts. The ships bombarded then attacked the river forts near Canton, taking them. Diplomatic efforts were renewed afterward, and the American and Chinese governments signed an agreement for U.S. neutrality in the Second Opium War.
Despite the U.S. government's promise of neutrality, the USS San Jacinto aided the Anglo-French alliance in the bombardment Taku Forts in 1859; see below for details.
Through 1857, British forces began to assemble in Hong Kong, they were joined by a French force. In December 1857 they had sufficient ships and men to raise the issue of the non fulfilment of the treaty obligations by which the right of entry into Canton had been accorded.:502 Parkes delivered an ultimatum, supported by Hong Kong governor Sir John Bowring and Admiral Sir Michael Seymour, threatening on 14 December to bombard Canton if the men were not released within 24 hours.
The remaining crew of the Arrow were then released, with no apology from Viceroy Ye Mingchen who also refused to honour the treaty terms. Seymore, MG van Straubenzee and Admiral de Genouilly agreed the plan to attack Canton as ordered.:503 This event came to be known as the Arrow Incident and provided the alternative name of the ensuing conflict.
The capture of Ye Mingchen after the fall of Canton
The capture of Canton, on 1 January 1858, a city with a population of over 1,000,000 by less than 6,000 troops, resulted in the British and French forces suffering 15 killed and 113 wounded. 200-650 of the defenders and inhabitants became casualties.
Ye Mingchen was exiled to Calcutta, India, where he starved himself to death.
Although the British were delayed by the Indian Rebellion of 1857, they followed up the Arrow Incident in 1856 and attacked Guangzhou from the Pearl River. Viceroy Ye Mingchen ordered all Chinese soldiers manning the forts not to resist the British incursion. After taking the fort near Guangzhou with little effort, the British Army attacked Guangzhou.
Meanwhile, in Hong Kong, there was an attempt to poison John Bowring and his family in January. However, the baker who had been charged with lacing bread with arsenic bungled the attempt by putting an excess of the poison into the dough, such that his victims vomited sufficient quantities of the poison that they had only a non-lethal dose left in their system. Criers were sent out with an alert, preventing further injury.
When known in Britain, the Arrow incident (and the British military response) became the subject of controversy. The British House of Commons on 3 March passed a resolution by 263 to 249 against the Government saying: That this House has heard with concern of the conflicts which have occurred between the British and Chinese authorities on the Canton River; and, without expressing an opinion as to the extent to which the Government of China may have afforded this country cause of complaint respecting the non-fulfilment of the Treaty of 1842, this House considers that the papers which have been laid on the table fail to establish satisfactory grounds for the violent measures resorted to at Canton in the late affair of the Arrow, and that a Select Committee be appointed to inquire into the state of our commercial relations with China. In response, Lord Palmerston assaulted the patriotism of the Whigs who sponsored the resolution and Parliament was dissolved, causing the British general election of March 1857.
The Chinese issue figured prominently in the election, and Palmerston won with an increased majority, silencing the voices within the Whig faction who supported China. The new parliament decided to seek redress from China based on the report about the Arrow Incident submitted by Harry Parkes. The French Empire, the United States, and the Russian Empire received requests from Britain to form an alliance.
In June 1858, the first part of the war ended with the four Treaties of Tientsin, to which Britain, France, Russia, and the U.S. were parties. These treaties opened 11 more ports to Western trade. The Chinese initially refused to ratify the treaties.
The major points of the treaty were:
Britain, France, Russia, and the U.S. would have the right to establish diplomatic legations (small embassies) in Peking (a closed city at the time)
On 28 May 1858, the separate Treaty of Aigun was signed with Russia to revise the Chinese and Russian border as determined by the Nerchinsk Treaty in 1689. Russia gained the left bank of the Amur River, pushing the border south from the Stanovoy mountains. A later treaty, the Convention of Peking in 1860, gave Russia control over a non-freezing area on the Pacific coast, where Russia founded the city of Vladivostok in 1860.
In June 1858, shortly after the Qing imperial court agreed to the disadvantageous treaties, more hawkish ministers prevailed upon the Xianfeng Emperor to resist encroachment by the Western powers. On 2 June 1858, the Xianfeng Emperor ordered the Mongol general Sengge Rinchen to guard the Taku Forts (also romanized as Ta-ku Forts and also called Daku Forts) near Tianjin. Sengge Rinchen reinforced the forts with additional artillery pieces. He also brought 4,000 Mongol cavalry from Chahar and Suiyuan.
The Second Battle of Taku Forts (1859) took place in June 1859, a British naval force with 2,200 troops and 21 ships, under the command of Admiral Sir James Hope, sailed north from Shanghai to Tianjin with newly appointed Anglo-French envoys for the embassies in Beijing. They sailed to the mouth of the Hai River guarded by the Taku Forts near Tianjin and demanded to continue inland to Beijing. Sengge Rinchen replied that the Anglo-French envoys may land up the coast at Beitang and proceed to Beijing but refused to allow armed troops to accompany them to the Chinese capital. The Anglo-French forces insisted on landing at Taku instead of Beitang and escorting the trip to Beijing. On the night of 24June 1859, a small batch of British forces blew up the iron obstacles that the Chinese had placed in the Baihe River. The next day, the British forces sought to forcibly sail into the river, and shelled the Taku Forts. Low tide and soft mud prevented their landing, however, and accurate fire from Sengge Rinchen's cannons sank four gunboats and severely damaged two others. American Commodore Josiah Tattnall, although under orders to maintain neutrality, declared "blood is thicker than water," and provided covering fire to protect the convoy's retreat. The failure to take the Taku Forts was a blow to British prestige, and anti-foreign resistance reached a crescendo within the Qing imperial court. 
Now that the Indian Mutiny had finally been quelled, Sir Colin Campbell, commander-in-chief in India, began amassing troops and supplies for another offensive in China. A 'soldiers' general', Campbell own experience of casualties due to disease in the First Opium War, lead him to provide the British forces with more than enough materiel and supplies, and casualties were light.
The third Battle of Taku Forts (1860) took place in the summer of 1860, London once more dispatched Lord Elgin with an Anglo-French force of 11,000 British troops under General James Hope Grant, 6,700 French troops under General Cousin-Montauban. They pushed north with 173 ships from Hong Kong and captured the port cities of Yantai and Dalian to seal the Bohai Gulf. On 3August they carried out a landing near at Beitang (also romanized as "Pei-t'ang"), some 3 kilometres (1.9 mi) from the Taku Forts, which they captured after three weeks on 21August.
After taking Tianjin on 23August, the Anglo-French forces marched inland toward Beijing. The Xianfeng Emperor then dispatched ministers for peace talks, but the British diplomatic envoy, Harry Parkes, insulted the imperial emissary and word arrived that the British had kidnapped the prefect of Tianjin. Parkes was arrested in retaliation on 18 September. Parkes and his entourage were imprisoned and interrogated. Half were reportedly executed by slow slicing, with the application of tourniquets to severed limbs to prolong the torture; this infuriated British leadership when they recovered the unrecognizable bodies.
The Anglo-French forces clashed with Sengge Rinchen's Mongol cavalry on 18 September near Zhangjiawan before proceeding toward the outskirts of Beijing for a decisive battle in Tongzhou (also romanized as Tungchow).  On 21September, at Baliqiao (Eight Mile Bridge), Sengge Rinchen's 10,000 troops, including the elite Mongol cavalry, were annihilated after doomed frontal charges against concentrated firepower of the Anglo-French forces, which entered Beijing on 6 October.
After Parkes and the surviving diplomatic prisoners were freed on 8 October, Lord Elgin ordered the Summer Palaces to be destroyed, starting on 18 October. Beijing was not occupied; the Anglo-French army remained outside the city.
The destruction of the Forbidden City was discussed, as proposed by Lord Elgin to discourage the Qing Empire from using kidnapping as a bargaining tool, and to exact revenge on the mistreatment of their prisoners. Elgin's decision was further motivated by the torture and murder of almost twenty Western prisoners, including two British envoys and a journalist for The Times. The Russian envoy Count Ignatiev and the French diplomat Baron Gros settled on the burning of the Summer Palaces instead, since it was "least objectionable" and would not jeopardise the signing of the treaty.
After the Xianfeng Emperor and his entourage fled Beijing, the June 1858 Treaty of Tianjin was ratified by the emperor's brother, Prince Gong, in the Convention of Beijing on 18 October 1860, bringing The Second Opium War to an end.
The British, French and—thanks to the schemes of Ignatiev—the Russians were all granted a permanent diplomatic presence in Beijing (something the Qing Empire resisted to the very end as it suggested equality between China and the European powers). The Chinese had to pay 8 million taels to Britain and France. Britain acquired Kowloon (next to Hong Kong). The opium trade was legalized and Christians were granted full civil rights, including the right to own property, and the right to evangelize.
The content of the Convention of Beijing included:
British ships were allowed to carry indentured Chinese to the Americas
Indemnity to Britain and France increasing to 8 million taels of silver apiece
Legalization of the opium trade
Two weeks later, Ignatiev forced the Qing government to sign a "Supplementary Treaty of Peking" which ceded the Maritime Provinces east of the Ussuri River (forming part of Outer Manchuria) to the Russians who went on to found the port of Vladivostok between 1860–61. The Anglo-French victory was heralded in the British press as a triumph for British Prime Minister Lord Palmerston, which made his popularity rise to new heights. British merchants were delighted at the prospects of the expansion of trade in the Far East. Other foreign powers were pleased with the outcome too, since they hoped to take advantage of the opening-up of China.
The defeat of the Qing army by a relatively small Anglo-French military force (outnumbered at least 10 to 1 by the Qing army) coupled with the flight (and subsequent death) of the Xianfeng Emperor and the burning of the Summer Palaces was a shocking blow to the once powerful Qing Empire. "Beyond a doubt, by 1860 the ancient civilisation that was China had been thoroughly defeated and humiliated by the West." After the war, a major modernisation movement, known as the Self-Strengthening Movement, began in China in the 1860s and several institutional reforms were initiated.
The opium trade faced incurred intense enmity from the later British Prime Minister William Ewart Gladstone. As a member of Parliament, Gladstone called it "most infamous and atrocious" referring to the opium trade between China and British India in particular. Gladstone was fiercely against both of the Opium Wars Britain waged in China in the First Opium War initiated in 1840 and the Second Opium War initiated in 1857, denounced British violence against Chinese, and was ardently opposed to the British trade in opium to China. Gladstone lambasted it as "Palmerston's Opium War" and said that he felt "in dread of the judgments of God upon England for our national iniquity towards China" in May 1840. A famous speech was made by Gladstone in Parliament against the First Opium War. Gladstone criticized it as "a war more unjust in its origin, a war more calculated in its progress to cover this country with permanent disgrace,". His hostility to opium stemmed from the effects of opium brought upon his sister Helen. Due to the First Opium war brought on by Palmerston, there was initial reluctance to join the government of Peel on part of Gladstone before 1841.