"Do you want a tip," I said.
"Yes, if you can give me one."
"Well, just walk along the train until you find a very comfortable compartment marked, 'O.C. train.' Get inside, lock the door, pull down the blinds and go to sleep."
"Thanks, awfully. I think I'll take that tip."
"By the way," I shouted after him, "what is our destination?"
"Haven't the faintest idea."
"Does anybody know?"
"I don't think so."
"Thanks, awfully."
The train journey was uneventful, save for alternatively eating and sleeping, and two days later I reported at battalion headquarters.