6. With the fall of Singapore, the operations directed against Burma are likely to be intensified to a degree limited by the amount of air support which can be spared from the attack on Sumatra and Java and by the capacity of the road and rail communications. Only Substitute "Four to six divisions can be maintained overland. Japanese improvements to communications, the use of sea transport, used an. and the fact that the Japanese are fighting light, suggest that up to six divisions should be reckoned with".