We shall need that.

His ability to endure suffering and still remain efficient seems proved.

That may be valuable; probably will be.
"I shall examine his credentials.

If he turns out to be a spy--well, life will be short, for him." He addressed himself to the masked aviator, who was still standing in an attitude of military attention.
"You are now one of us, sir.

You become the thirtieth member of a little group of as brave men, as daring and determined fighters as can be found in America or in the world--all tried and tempered by the fires of war; all decorated for conspicuous valor; all ready to follow me to the ends of the earth and die, if need be; all eager to share in an undertaking as yet unknown to them, but one that promises to be the most extraordinary adventure ever undertaken on this planet.