"Very good, then. Now, you fellows get to your places and then move toward the clearing. As soon as you see my men moving across the opening, advance."

Jack and Captain Glenn returned to their commands and gave the necessary marching orders. The men moved off in the darkness.

Less than an hour later Jack stood in the shelter of a large tree at the very edge of the clearing. In the distance he could make out what appeared to be numerous buildings. This was the point, the lad felt sure, where the blow would be struck.

In his left hand Jack carried a small but powerful bomb, which had been provided by Captain Jack. The fuse attached would burn fifteen minutes. In the time after it was lighted this meant that the attacking party had fifteen minutes to get out of the way before the explosion occurred. Captain Glenn and Captain Jack carried similar explosives.

Jack kept his eyes upon the place where Captain, Jack's party soon was to move across the open. For five minutes he gazed without result, and then he saw several shadowy figures stealing across the clearing.

Jack turned to his men with a command.

"March!" he ordered.

He placed himself at their head and they dashed through the darkness at a run.

A quarter of a mile on the other side of Captain Jack's party, Captain
Glenn also had ordered his men forward.

Meanwhile, what of Frank and the submarine?