 Meanwhile, the newly created Burma Corps which had been formed to relieve Burma Army headquarters of the day-to-day responsibility for operations and consisted of 1st Burma Division, 17th Indian Division and 7th Armoured Brigade, defended the Irrawaddy River valley.Supplies were not immediately a problem, as much war material (including material originally meant for shipment to China) had been evacuated from Rangoon, rice was plentiful and the oilfields in central Burma were still intact, but no proper land routes from India existed and only the recapture of Rangoon would allow the Allies to hold Burma indefinitely.The Allies hoped that the Japanese advance would slow down; instead, it gained speed.