At this time the country was one of dense jungle, and was therefore unfavourable for military operations, the British knew little of the interior of Upper Burma; but British steamers had for years been running on the great river highway of the
Irrawaddy River, from Rangoon to Mandalay, and it was obvious that the quickest and most satisfactory method of carrying out the British campaign was an advance by water direct on the capital. Further, a large number of light-draught river steamers and barges (or flats), belonging to the
Irrawaddy Flotilla Company under the control of
Frederick Charles Kennedy, were available at Rangoon, and the local knowledge of the company's officers of the difficult river navigation was at the disposal of the British forces. The river fleet which conveyed the troops and stores was composed of more than 55 steamers, barges, and launches among other things. At that time, most of the Burmese did not like Thibaw both because of the poor management of his government and because he and/or his king-makers had executed nearly a hundred royal princes and princesses when he ascended the throne in 1878. Nyaungyan was a survivor of this royal massacre and had been living in exile in British India, although in fact he was already dead by this time. However, the British concealed this fact, and according to some sources the British even brought a man impersonating Prince Nyaungyan along with them on their way to Mandalay so that the Burmese would believe their story of installing a new king. Thus, the Burmese who welcomed this purported new king made no attempt to resist the British forces. However, when it became obvious that the British had actually failed to install a new king and Burma in fact had become annexed to the Raj, fierce rebellions by various Burmese groups, including the troops of the former royal Burmese army, ensued for more than a decade. U Kaung's role in the initial collapse of Burmese resistance later gave rise to the popular mnemonic ("U Kaung's treachery, end of dynasty": U (ဥ) =1, Ka (က) =2, La (လ) =4, Hat (ထ) =7 in Burmese numerology i.e. Burmese Era 1247 or 1885AD). War Memorial at
Bangalore, details the lives lost by the Regiment in Burma 1885-87 On 26 November, when the flotilla was approaching the capital
Ava, envoys from King Thibaw met General Prendergast with offers of surrender; and on the 27th, when the ships were lying off that city and ready to commence hostilities, the order from the king to his troops to lay down their arms was received. There were three strong forts here, full at that moment with thousands of armed Burmese, and though a large number of these filed past and laid down their arms by the king's command, still many more were allowed to disperse with their weapons; and these, in the time that followed, broke up into guerrilla bands and prolonged the war for years. Meanwhile, however, the surrender of the king of Burma was complete; and on 28 November, in less than a fortnight from the declaration of war, Mandalay had fallen, and King Thibaw was taken prisoner, and every strong fort and town on the river, and all the king's ordnance (1861 pieces), and thousands of rifles, muskets and arms had been taken, primarily from the Mandalay palace and the city itself. The proceeds were sold off at a profit of 9 lakhs of rupees (roughly 60,000 pound sterling). From Mandalay, General Prendergast reached
Bhamo on 28 December. This was a very important move, as it forestalled the Chinese, who had their own claims and border disputes with Burma. Though the king was dethroned and exiled with the royal family to India, and the capital and the whole of the river in the hands of the British, bands of insurgents took advantage of the situation to continue an anti-social resistance which proved very difficult to defeat. == Annexation and resistance ==