But he knew that the Germans would be there in a minute or two, and he had no reason to suppose that they would lack common humanity.

They would care for Boris.
Probably they had a surgeon back at the culvert, or fairly near at hand, at any rate.
"Get off the road," said Boris, gritting his teeth.

"My head is swimming, and I'm afraid I'm going to faint or do some such foolish thing! But don't stay in the road.

They're sure to go along, looking for you." Fred had reasoned that out for himself.

And now, when he had rolled up Boris's coat and helmet into a bundle, he leaped a narrow ditch and plunged into a thick mass of bushes.