Mr Standfast by John Buchan

Next morning I found the Army Commander on his way to Doullens.

'Take over the division?' he said. 'Certainly. I'm afraid there isn't much left of it. I'll tell Carr to get through to the Corps Headquarters, when he can find them. You'll have to nurse the remnants, for they can't be pulled out yet--not for a day or two. Bless me, Hannay, there are parts of our line which we're holding with a man and a boy. You've got to stick it out till the French take over. We're not hanging on by our eyelids--it's our eyelashes now.'