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
River systems of Thailand Chao Phraya, are the most significant gulf systems in Thailand: The Bang Pakong River is a river in eastern Thailand. The river originates at the confluence of the Nakhon Nayok River and the Prachinburi River at Pak Nam Yothaka in Amphoe Ban Sang, Prachinburi Province. It empties into the Gulf of Thailand in the northeastern tip of the Bay of Bangkok. The Bang Pakong's principal tributaries are the Nakhon Nayok River and the Prachin Buri River. The watershed of the Bang Pakong is about . The Phetchaburi River is a river in western Thailand. It originates in Kaeng Krachan National