"Then understand, all of you, that you must be there exactly as the dawn breaks, and, as soon as we pick each other up, we shall fall into regular flight formation, make a bee line for the sheds, and drop the squibs before the enemy can get to work with their Archies," said Dastral.

"And the cargo, Dastral? What shall we load up with?"

"Six twenty-pound bombs each, with ten drums of the new machine-gun ammunition. I think that will be all we can safely take without reducing speed."

"Right, sir!"

"And understand, boys," the leader went on. "There must be no fighting on the way there, even if attacked, unless it is absolutely necessary to prevent a crash. I quite expect we may have to fight an airship or two, and possibly a patrol of Fokkers or Aviatiks, for the Zeps are sure to be escorted on their way back, if they get wind of our little game."

"Agreed, sir."

"And now, gentlemen, to bed, all of you. It is imperative that you should each have a good night's rest, for if any man's nerves are run down in the morning, I shall put him off," said Dastral seriously, and they knew he meant it, for he could be serious at times, despite his laughing blue eyes, and his apparently gay and reckless manner.

So to bed they went, for they were all tired out, and not even the promise of the morrow's venture could keep them awake, for these daring airmen had learnt the happy knack of taking sleep whenever they could get it, as soon as duty was done, and of forgetting all about their machines as well as their own wonderful exploits.

Next morning, long before dawn, Corporal Yap, humming one of his rag-time songs, went round the bunks of the officers' mess and gently called the pilots and observers one by one. Within an hour they had breakfasted and were out on the aerodrome watching the machines being wheeled out, by the aid of the hand-lamps and electric torches.

After a brief but careful final examination of every strut and wire, the machines were quite ready, all loaded up, with the machine-guns shipped, compasses aboard, etc.