Japanese conquest of Burma main attack westward from Rahaeng in Thailand across the Kawkareik Pass. The 16th Indian Infantry Brigade of the 17th Indian Division guarding this approach retreated hastily westward. The Japanese division advanced to Moulmein at the mouth of the Salween River which was garrisoned by the 2nd Burma Infantry Brigade. The position was almost impossible to defend, and had the River Salween, almost wide, behind it. The 2nd Burma Brigade was squeezed into a progressively tighter perimeter, and eventually retreated over the river by ferry on 31 January after abandoning a large amount of supplies and equipment. Part of the force
Great Tenasserim River been exported from the area due to a serious insurgency problem prevailing in the region. Great Tenasserim River Great Tenasserim River or the Tanintharyi River is a major river of southeastern Burma. It flows through the Tanintharyi Region, past the town of Tanintharyi before entering the sea at Myeik (Mergui). The river rises from the Tenasserim Range at an altitude of and flows into the Andaman Sea. The region formed by this river is also known as Tenasserim, Tanintharyi in Burmese, which is in a constricted coastal region in southeastern Myanmar (formerly Burma), which has border with Thailand on the