for deployment in China. On 20 February 1840 Palmerston (who remained unaware of the First Battle of Chuenpi in November 1839) drafted two letters detailing the British response to the situation in China. One letter was addressed to the Elliots, the other to the Daoguang Emperor and the Qing government. The letter to the Emperor informed China that Great Britain had sent a military expeditionary force to the Chinese coast. In the letter, Palmerston stated that,
These measures of hostility on the part of Great Britain against China are not only justified, but even rendered absolutely necessary, by the outrages which have been committed by the Chinese Authorities against British officers and Subjects, and these hostilities will not cease, until a satisfactory arrangement shall have been made by the Chinese Government.
In his letter to the Elliots, Palmerston instructed the commanders to set up a blockade of the Pearl River and forward to a Chinese official the letter from Palmerston addressing the Chinese Emperor. They were to then capture the Chusan Islands, blockade the mouth of the Yangtze River, start negotiations with Qing officials, and finally sail the fleet into the Bohai Sea, where they would send another copy of the aforementioned letter to Beijing. Palmerston also issued a list of objectives that the British government wanted accomplished, with said objectives being:
Lord Palmerston left it to Superintendent Elliot's discretion as to how these objectives would be fulfilled, but noted that while negotiation would be a preferable outcome, he did not trust that diplomacy would succeed, writing;
To sum up in a few words the result of this Instruction, you will see, from what I have stated, that the British Government demands from that of China satisfaction for the past and security for the future; and does not choose to trust to negotiation for obtaining either of these things; but has sent out a Naval and Military Force with orders to begin at once to take the Measures necessary for attaining the object in view.
The Chinese naval forces in Canton were under the command of Admiral Guan Tianpei, who had fought the British at Chuenpi. The Qing southern army and garrisons were under the command of General Yang Fang. Overall command was invested in the Daoguang Emperor and his court. The Chinese government initially believed that, as in the 1834 Napier Affair, the British had been successfully expelled. Few preparations were made for a British reprisal, and the events leading to the eventual outbreak of the Sino-Sikh War in 1841 were seen as a greater cause for concern.
Left without a major base of operations in China, the British withdrew their merchant shipping from the region while maintaining the Royal Navy's China squadron in the islands around the mouth of the Pearl River. From London, Palmerston continued to dictate operations in China, ordering the East India Company to divert troops from India in preparation for a limited war against the Chinese. It was decided that the war would not be fought as a full-scale conflict, but rather as a punitive expedition. Superintendent Elliot remained in charge of Britain's interests in China, while Commodore James Bremer led the Royal Marines and the China Squadron. Major General Hugh Gough was selected to command the British land forces, and was promoted to overall commander of British forces in China. The cost of the war would be paid by the British Government. Per Lord Palmerston's letter, plans were drawn up by the British to launch a series of attacks on Chinese ports and rivers.
British plans to form an expeditionary force were started immediately after the January 1840 vote. Several infantry regiments were raised in the British isles, and the completion of ships already under construction was expedited. To conduct the upcoming war, Britain also began to draw on forces from its overseas empire. British India had been preparing for a war since word had arrived that the opium had been destroyed, and several regiments of Bengali volunteers had been recruited to supplement 