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
Treaty between Thailand and Japan (1940) Treaty between Thailand and Japan (1940) The Treaty between Thailand and Japan Concerning the Continuance of Friendly Relations and the Mutual Respect of Each Other's Territorial Integrity was concluded in Tokyo on June 12, 1940 between the Thai and the Japanese governments. The treaty was a step in co-operation between the Thai and the Japanese governments, which eventually became allies in the Second World War. Ratifications were exchanged in Bangkok on December 23, 1940. The treaty became effective on the same day and was registered in "League of Nations Treaty Series" on July 26, 1941. Following the Japanese invasion of