 From August to November, Fourteenth Army pursued the Japanese to the Chindwin River despite heavy monsoon rains.While the newly arrived 11th East Africa Division advanced down the Kabaw Valley from Tamu and improved the road behind them, the 5th Indian Division advanced along the mountainous Tiddim road.As Fourteenth Army planned to use only the Kabaw Valley route for supply during the next season's campaign, the Tiddim Road (which included evocatively named stretches such as the "Chocolate Staircase") was allowed to fall into ruin behind the 5th Division, which was supplied entirely by parachute drops.