I don’t think the ‘Jungle type containers’ are the SOE C or H types offered up by Bruggen 130 and they are certainly not the CLE types suggested by pfP7063. I’d suggest that they are a home grown Australian design which is interesting as they seem to have followed the general layout of the CLE whose shape was driven by the need to fit in British bombers and their bomb bays and bomb cells designed around the 500lb GP Bomb.
See in the Jungle types reminds me that another supply container designed and used in large numbers in the Far East during WW2 is still in service with Britain’s military. – Long live the SEAC pack, even though many of the army Air Despatchers pushing them out of a Hercules door would be at a loss to tell you what SEAC stood for.