sentences:  In order to devise efficient radar weapons for practical use as soon as possible, however, both the Army and the Navy should have pooled their research facilities; but here again the serious rivalry between the armed services stood in the way.The Army itself studied and manufactured anti-submarine radar equipment to be installed on its own transports.Among those concerned with Army operations, incidentally, not a few were of the opinion that the inferiority of anti-submarine radar devices was a cause for Japan's defeat.