By mid-1945 , United Kingdom leaders were proposing that a combined Commonwealth corps comprising five divisions be assembled in India , and that they be introduced to the campaign in Operation Coronet – landings on Honshū , near Tokyo Bay , during March 1946 . By the time of the Potsdam Conference , however , MacArthur was insisting that only three divisions should be part of the combined Commonwealth corps , as part of a US army-level formation . MacArthur also proposed that : the corps should be kept in reserve rather than taking part in initial landings ; it should not include Indian Army units , due to " linguistic and administrative complications " , and ; in the interests of rationalising lines of supply , the Commonwealth divisions should be re-organised to resemble US divisions , as well as being trained and equipped with US weapons , vehicles and other key equipment . Besides questions of American national prestige , which undoubtedly weighed heavily , behind these conditions was a desire to simplify the lines of communication and the logistic support arrangements of the invasion force . Indeed , once established in Japan MacArthur intended to switch his strategic lines of communication direct to America
Potsdam Conference
Potsdam Conference
Commonwealth Corps