Volker,
"When did the last Allied/German POW return home?"
Thanks to forumites, Gordon Branch and Hannes Tager the AFC website has several of the interrogations and debriefings of the AFC POW's by both the German Army and the Australian Army. They are at;
Several of the debriefings done by the Australian Army include descriptions of the lack of food towards the end of the war and how they demobilized.
Lt E.J.Goodson writes;
"When the Armistice was signed. I was placed under the protection of the Dutch consul and on parole- not to leave the building. The building I was in was made a receiving depot for british prisoners of war., brought there by the Germans and placed under my charge. I sent the men towards the frontier in batches of between 50 and 150 in charge of officers or NCO's with a passport for the Germans Soldiers Committee. Only 10 days of rations were left for 30 men. Over 200 came the next day. We had no rations with which to supply the men moving out. We were fed entirely by the Belgian Relief Committee. After clearing the camp of Prisoner of War I was given permission to leave and made my way to Calais. I arrived in Calais at 7.30 am on 27th November 1918 and sailed for Dover the same day."
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Australian Flying Corps Website