The Asiatic journal and monthly register for British and foreign ..., Volume 34 1841

[William Douglas]

Capt. Douglas, late of the Cambridge (who was presented to Her Majesty, and knighted), having heard, whilst at Singapore, of the seizure of Capt. Elliot and the British residents at Canton, sold his cargo, and purchasing some 32-pounders and ammunition, sailed, with an addition to his crew, to their relief. His arrival was most opportune, as there was no man-of-war then on the station. He had exercised his crew at the guns, and theCambridge acted as a vessel of war, and in the action at Kow-loon, on the 5th September, 1839, he was severely wounded with several of his men. Capt. Douglas and the crew of the Cambridge have received remunerations on the following scale:—Capt. Douglas £2,000; the first officer £1C0; the second £60; the third and fourth, each, £50; the surgeon and purser, each, £80; the warrantofficers £49 each for those engaged in the action of Kow-Loon, and £30 each for those not engaged; the petty officers £16 for those engaged, and £10 for those not engaged; seamen in action £8; not in action £4; two seamen severely wounded £20 each.

The picture shows an engagement between the Chinese and British during the 1st Opium War.  Charles Elliot was the British Superintendent of Trade in China