Burma National Army
Though the Allied force had advanced successfully into central Burma, it was vital to capture the port of Rangoon before the monsoon to avoid a logistics crisis. In the spring of 1945, the other factor in the race for Rangoon was the years of preparation by the liaison organisation, Force 136, which resulted in a national uprising within Burma and the defection of the entire Burma National Army to the allied side. In addition to the allied advance, the Japanese now faced open rebellion behind their lines.