A vast silence brooded over the landscape, broken now and again by a noise like the crackling of thorns under a pot. As we took cover behind a wall of ruined houses we heard a sinister hiss, but whence it came or what invisible trajectory it traced through the leaden skies overhead neither of us could tell. Silence again fell like a mist upon the land; not a bird sang, not a twig moved. The winter sun was sinking in the west behind a pall of purple cloud in a lacquered sky--the one touch of colour in the sombre greyness. The land was flat as the palm of one's hand, its monotony relieved only by lines of pollarded willows on which some sappers had strung a field telephone. Raindrops hung on the copper wire like a string of pearls, and the heavy clay of the fields was scooped and moulded by the rain into little saucer-like depressions as if by a potter's thumb. Behind us lay the reserve trenches, their clay walls shored up with wickerwork, and their outskirts fringed with barbed wire whose intricate and volatile coils looked like thistledown. The village behind whose walls we now sheltered lay in a No Man's Land between the enemy's lines and our own, and the sodden fields were not more desolate. A tornado of artillery fire had swept over it, and of the houses nothing was left but indecencies, shattered walls and naked rafters, beneath which were choked heaps of household furniture, broken beds, battered lamps, and a wicker-chair overturned as in a drunken brawl. What had once been the street was now a quarry of broken bricks, with here and there vast circular craters as though a gigantic oak-tree had been torn out of the earth by the roots. And now the weird silence was broken by sounds as of some one playing a lonely tattoo with his fingers upon a hollow wooden board, but the player was invisible, and as we looked at each other the sound ceased as suddenly as it began. Our practised ear told us that somewhere near us a machine-gun was concealed, but these furtive sounds were so homeless, so impersonal, that they eluded us like an echo.