“Then we’d better be off.”

Dawn was not yet day as the four crossed the track in front of the guns; tramped away towards the wood. They walked slowly, eyes on the black telephone-wire. “Seems O. K., so far,” said Peter, “better test her though.” The Bombardier unslung his telephone-case, inserted pin in the wire, tapped, was answered.

Now the wire rose from ground to poles; spanned a road yellow with mud; disappeared breast-high among tree-trunks. They pashed across; tested again; passed in among the trees; began fighting their way through the undergrowth along the lip of a zig-zag and water-logged trench.

“Lucky we didn’t run her down there, sir,” grinned the Bombardier.

“Damned lucky.” Already Peter felt dog-weary. Twice he stumbled, and Mucksweat helped him to his feet. Then fatigue reacted; the poison of over-strain distilled its poison of over-energy. The apprehension of overnight disappeared. . . .

They worked their way through the wood to the hillside. In front, the world seemed asleep. From behind, came the occasional thud of a gun. A ’plane droned over, high in air. Below them, lay the Bois de Trônes, still black in the half-light: all along the fringe of it, they could see waiting infantry. The wire dipped into a dry trench; they followed it down-hill.

They emerged from the trench—and the wire ended abruptly. “Call up the battery,” ordered Peter. . . . “Battery on, sir.” . . . He took the instrument: “Is Captain Sandiland there? . . . Hello—That you, Sandiland. . . . We’re at the edge of Trônes Wood. . . . All O. K. up to here. . . . What’s that? . . . No good trying to run her any further. . . . Quite. . . . I’ll leave Finlayson here. . . . You’d better send him up a linesman. . . . What’s that? . . . Oh, yes, I’m quite all right. Cheerio.”

“Hadn’t you better leave Blenkinsop, sir,” suggested the Bombardier. “Why?” asked Peter. Finlayson’s lips tightened. “Blenkinsop’s a very good operator, sir.”

“I know that as well as you do, Bombardier. What are you driving at?”

“Well, sir, as N.C.O. of the party. . . .”