When you come from the ditch to the trench you leave the weeds and soil and trunks of willows and see the bare chalk. At the top of those two white walls is a foot or so of brown clay. The brown clay grows deeper as you come to the hills, until the chalk has disappeared altogether. Our alliance with France is new in the history of man, but it is an old, old union in the history of the hills. White chalk with brown clay on top has dipped and gone under the sea; and the hills of Sussex and Kent are one with the hills of Picardy.
And so you may pass through the chalk that lies in that desolate lane with memories of more silent and happier hills; it all depends on what the chalk means to you: you may be unfamiliar with it and in that case you will not notice it; or you may have been born among those thyme-scented hills and yet have no errant fancies, so that you will not think of the hills that watched you as a child, but only keep your mind on the business in hand; that is probably best.
You come after a while to other trenches: notice boards guide you, and you keep to Windmill Avenue. You go by Pear Lane, Cherry Lane, and Plum Lane. Pear trees, cherry trees and plum trees must have grown there. You are passing through either wild lanes banked with briar, over which these various trees peered one by one and showered their blossoms down at the end of spring, and girls would have gathered the fruit when it ripened, with the help of tall young men; or else you are passing through an old walled garden, and the pear and the cherry and plum were growing against the wall, looking southwards all through the summer. There is no way whatever of telling which it was; it is all one in war; whatever was there is gone; there remain to-day, and survive, the names of those three trees only. We come next to Apple Lane. You must not think that an apple tree ever grew there, for we trace here the hand of the wit, who by naming Plum Lane's neighbour "Apple Lane" merely commemorates the inseparable connection that plum has with apple forever in the minds of all who go to modern war. For by mixing apple with plum the manufacturer sees the opportunity of concealing more turnip in the jam, as it were, at the junction of the two forces, than he might be able to do without this unholy alliance.