Between 1390 and 1413, Tarabya served as governor of Pakhan and as an officer in the Ava military in several campaigns, mostly against the southern Hanthawaddy forces in the Forty Years' War.
Sithu of Yamethin were a voice of caution, urging the king not to invade Hanthawaddy right before the start of the rainy season.
[8] The invasion ended in total disarray three months later; Tarabya was one of the commanders in the rearguard army that failed to secure an orderly withdrawal.
First, early in the campaign c. November 1412, his regiment failed to capture a key Hanthawaddy stockade, defended by Commander Smin Upakaung, blocking the route to the besieged city of Prome (Pyay).
[10] Later, in May 1413,[note 3] Tarabya failed to defend the key port city of Syriam (Thanlyin), which had been captured by Crown Prince Minye Kyawswa with great difficulty just a few weeks earlier.
The loss of Syriam frustrated the Ava crown prince's plans to occupy the Irrawaddy delta over the rainy season (June–October),[note 4] and forced him to pull back to Prome.
King Minkhaung transferred Tarabya to become governor of Pagan, and appointed his youngest son Prince Minye Kyawhtin to take over Pakhan.
[12][13] His posting at Pagan (Bagan), the ancient capital, may have been a face-saving measure, as Tarabya never went to the front again as an active commander.
According to the chronicles, he had at least two children: Queen Saw Min Hla of Ava (r. 1421–1425) and her younger brother Viceroy Tarabya of Toungoo (r. 1440–1446).