下ビルマ
After Maha Bandula's death on 1 April 1825 in the battle of Danubyu, the remaining Burmese forces retreated to Upper Burma. The British, led by Gen. Archibald Campbell, took Prome (Pyay), the traditional border town between Upper Burma and Lower Burma, on 4 April 1825. The British decided to consolidate their gains in Lower Burma throughout the monsoon season.