The Anglo-French Tank Fleet on the River has no means of protection and, at present, no means of being evacuated. Most of the barges and vehicles wound have to be considerably strengthened before they could safely make the passage to Istanbul. THE TIME FACTOR. 8. There are already adequate German troops adjacent to Hungary, but an additional 15-20 divisions would be required to continue the advance into Roumania and Eastern Yugoslavia. The concentration of these additional divisions, would require about 10-15 days, but for reasons of surprise, it is improbable that the full concentration would take place before operations started.