The snow thinned off as we plodded on our way. But it had altered and improved the trenches out of knowledge, lying thick along the top on either hand and often half-way down the side, so that we seemed like Gullivers striding between two chains of Lilliputian Alps. It was nevertheless hard going in our valley, where the duck-boards were snowed under for long stretches without a break, and warmer work in my fleece lining than I had known it yet. My gas-mask was like a real mill-stone round the neck; and though the other man had possessed himself of part of my impedimenta, that only made me feel my age the more acutely. Almost a great age I felt that morning; for nights on packing-cases in a low temperature, and an early start on biscuits and condensed-milk prepared with cold water, after short commons of sleep, are the kind of combination that will find a man out. I was not indeed complaining, but neither was I as observant as I might have been. I had been over this part of the ground by myself the day before, on the way to my Christmas dinner. It did look rather different in the snow, but that was to be expected, and the other man knew the way well. So I understood, and he emphatically affirmed the supposition on such provocation as I from time to time felt justified in giving the voluntary bearer of my pack. It was only when we came to some suspiciously unfamiliar landmark, something important (but I honestly forget what) in a bay by itself, that I asserted myself sufficiently to call a halt. 'We never passed _that_ before!' 'Oh, yes, we did. I'm sure we did. I think I remember it.' That ought not to have satisfied me; but you cannot openly discredit a man who insists on carrying your pack. I was too fatigued to take it from him, and not competent to take the lead. On he led me, perspiring my misgivings at every pore; but under a tangled bridge of barbed wire I made a firmer stand. 'Anyhow, you don't remember _this_!' I asserted point-blank. 'No. I can't say I do.' 'Then how do you account for it?' 'It must have been put up in the night.' I cannot remember by what further resource of casuistry that young man induced me to follow him another yard; yet so it was, and all the shame be mine. He himself was the next to falter and stand still in his tracks, and finally to face me with a question whose effrontery I can still admire: 'What would you do if we met a Hun? Put your hands up?'