Immediately after receiving the radio message about Lothar's broadcast Verney asked the Lieutenant leading his party to circulate to all the other climbing teams an urgent signal. So far the troops had been told only that they were on an emergency operation and must get up to the cave for the purpose of arresting with the least possible delay anyone they found in it. Now they were told that in the cave there was a madman who had stolen an H bomb, and that he planned to let it off at midday. They were then called on to take risks if necessary and make an all-out effort to reach the cave in time. Verney also took it on himself to promise quadruple pensions for the dependants of men who might be injured or killed in the attempt, and rich rewards and honours for the first three teams to reach the cave. They were told, too, that although other teams were on the way to the far entrance of the cave, these had had to make a wide detour before starting their climb, so there was no chance of their reaching the goal first. In consequence, success or failure depended on the teams that had set out on the direct route up from the wrecked engine-house.

There was no more that he could do; yet within the next few minutes it was apparent that the message had galvanized the troops into considerably swifter progress, and his own party resumed the climb at a faster pace.

As the officer or N.C.O. leading each party carried a walkie-talkie set the Sergeant with Barney's team had received the radio message relayed from Berne at the same time as his Lieutenant. The moment Barney heard of it he too realized that only a superhuman effort could enable them to reach the cave before midday, and without waiting for C.B.'s message he urged his party to greater speed.

For the amateurs the pace on the easier stretches became grinding; yet the harder ones caused them more distress from their very slowness on them, and the time it took to cut steps in the ice or plough through patches of soft snow. Many times they slipped and would, perhaps, have fallen to their deaths had it not been for the strong surefooted Alpine troops to whom they were roped before and behind.