I lay down knowing that there would be heaps of work to do the next day, whatever happened, and that I should want my wits about me. But I could not sleep, and at about 2.30 I went upstairs to see Grieve again. He reported there was no change in the position. We tried to get an answer from the orderlies’ quarters, but there was no reply. It was rather baffling. At 3 o’clock we held a council of war with Captain Sharp, who was one of those due to go through early in the list, and we agreed—although it was against the instructions given us, which had been that the orderlies should alone be responsible for letting anyone through the attic hole—that Sharp should go through to reconnoitre. He did so, and came back in about a quarter of an hour’s time to report that no one was about, and that the tunnel was empty[10]. [Footnote 10: It was never found out exactly what caused the check and I do not think it ever will be.] It was rather a nasty moment. We had a sudden new suspicion of insecurity and a feeling that valuable time might have been lost. It now wanted about two hours to dawn, and so far we reckoned that only 24 were out of the camp. It did not look very promising for most of the waiting list. In the absence of the orderlies—we hardly felt justified in giving them further orders—we sent through the next five officers on the waiting list, headed by Sharp, allowing five minutes between each. They did not return, so we concluded that the tunnel was still clear and that they had got away, thus bringing the total number to 29. About half a dozen more had followed at regular intervals, and it was getting on for half-past four, when the last—Captain Gardiner of the A.I.F.—came back to report that the tunnel was blocked and passage impossible. According to his report the tunnel was reverberating with groans, curses, and expressions of encouragement. Someone apparently was stuck in front and was urging those behind him to get back in order to let him out. Those behind, on the other hand, like the Tuscans in the famous Lay, were crying “Forward” in no uncertain tones, and urging him to get out and on with it. It had clearly become a hopeless impasse. It seemed best, therefore, at this juncture to call a halt and clear the course before daylight, so as to defer the chance of discovery till the last possible moment. Recommendations were therefore passed along to evacuate the tunnel.