However , the combined force was unsuccessful in holding Prome against another Toungoo attack in 1542 .
The saophas finally banded together and sent in a force to relieve Prome in 1539 .
The combined force was unsuccessful in holding Prome against another Toungoo attack in 1542 .
The saophas finally banded together and sent in a force to relieve Prome in 1539 .