"As a result of our confabulation we found ourselves about ten that night crawling up a hedge towards the slag heap in question. When we did get there we went and lost our blighted selves. How long we were crawling and twisting about that Gawd-forsaken heap or which way our lines lay I'd no means of knowing. But poor old Tommy rolled down a bank with an armful of German helmets and other trophies, making a noise like a fire engine galloping up the Mile End Road. Then suddenly one of those German flares fell on the ground about a hundred yards away, and all things, including Tommy and I, shone out in their naked splendour. Then you can take it from me we did see where we were.
"I thought Tommy was having a bad attack of epileptic fits for a moment, till it transpired that he had flumped down on a dead Boche in endeavouring to escape the searching glare of the flare. After the thing had burnt its giddy self out Tommy crawled crab-fashion over into the providential cutting in which I had taken shelter. He was wiping his forehead with the back of his hand, and he looked very solemn and rather frightened. 'Did you spot that chap crouching in that V-shaped cutting down there?' he said. 'I thought he was one of our old crowd at first, but what with that cursed light and the excitement I could not be certain.'
"'I saw nothing.'
"'Just before the flare went up I noticed a flash lamp; one of those things used to give signals with. I got an awful turn then.'
"'Rot,' I said: 'I don't believe a word of it.'
"'Do you mind coming over this way then?' said Tommy.
"In the pitch-black darkness, guided by Tommy, I stumbled up a path which I'll swear was all of a one in three gradient. We came out upon a little ledge overlooking what we now knew to be the German lines. Tommy motioned me to keep my eye on the V-shaped cutting in the slag below us.
"'I think the beggar is down in the extreme angle of the V,' he whispered as he crawled beside me.
"Then I overbalanced, fell over the ridge, and dropped clean on to something soft and yielding below. Red specks dotted the blackness before my eyes for a few moments as I bounced on the hard stones. I jumped up with a jerk and spun round to find, blocking my path, a menacing figure regarding me over the barrel of a Browning pistol. In the other hand he held an electric torch.
"'Don't move,' he said in good English.