They asked me to take it on trust and put myself unreservedly in their hands.

I would get my instructions later, they said.
I asked if it was important.
Bullivant narrowed his eyes.

'If it weren't, do you suppose we could have wrung an active brigadier out of the War Office?
As it was, it was like drawing teeth.' 'Is it risky ?' was my next question.
'In the long run--damnably,' was the answer.
'And you can't tell me anything more ?' 'Nothing as yet.

You'll get your instructions soon enough.

You know both of us, Hannay, and you know we wouldn't waste the time of a good man on folly.