The German reached in his pocket and produced a pack of cigarettes. He extended the pack to Jack.
"Have one?" he invited.
Jack accepted a cigarette.
The German produced a match. He laid his rifle upon the ground as he struck the match upon the leg of his trousers.
It was the moment for which Jack had been waiting.
Quickly his revolver leaped out. In almost the same instant he reversed it and before the German realized what was about to happen he brought the butt down on the man's head with great force.
The man fell to the ground without a sound.
Frank, advancing upon the other German, also was challenged when he drew close, but he, too, engaged his prey in conversation. As the man turned his head for a moment to gaze across the dark sand, the lad struck him violently over the head with his revolver butt. The German dropped like a log.
A few moments later Frank and Jack met again near the first aeroplane.
"It'll have to be quick work here," Jack warned "We haven't a whole lot of time, you know."