Thayet: History
On the annexation of Pegu by the British in 1852–53, Thayet (then called Thayetmyo) was formed into a subdivision of Prome district; and in 1870 it was erected into a separate jurisdiction and placed under a deputy-commissioner. It was formerly in the Irrawaddy division of Lower Burma, but was transferred to Upper Burma for administrative purposes in 1896.
In the early 20th century, the area contained the wing of a British battalion and a local regiment.