New Guinea The Americans set up a big supply and communications centre at Port Moresby,. Australian and native troops are forced to evacuate the airfield at Kokoda, which can no longer be defended. Eastern Front The German threat to Stalingrad increases as Army Group B eliminates the Soviet bridgehead at Kalach in the bend of the Don. There is disagreement between Hitler and Halder.Halder still insists that priority shoould be given to the capture of Moscow, while Hitlers first objective is the Caucasian oil fields. Hitler is wrong; Germany is able to wage war for two and a half years more without oil from the Caucasian.