As the reverberations died away there were cries of rage from the Chinese in the two jeeps that had got across, three soldiers in one and four in the other. They fired their light machine guns into the rocks below the escarpment and Chavasse cowered down and opened his haversack. There was one block of plastique left. He inserted the remaining two-minute pencil and started to count, the Sten gun ready in his other hand.

He fired it in short sharp bursts with his left hand, still counting, and the soldiers raked the rocks with machine-gun fire so fierce that he had to keep his head down and hurl the block of plastique blindly. This time his luck was good, for it landed in the jeep containing four soldiers and exploded a second later, with devastating effect.

He glanced over a rock and saw only carnage. The four soldiers had been killed outright and the other jeep tilted on one side, its three occupants having been thrown from it. As Chavasse watched, they got to their feet, coughing in the acrid smoke, and picked up their weapons. He stood and opened fire with the Sten, three bullets kicking up dirt beside them. Then the magazine simply emptied itself. He threw it down, turned and ran for his life as the three Chinese cried out and came after him.

Bullets ploughed into the ground beside him, kicking up snow as he struggled up the slope, and then a cheerful voice cried, “Lie down, Paul, for God’s sake.”

Hamid appeared on the ridge above, holding the Bren light machine gun in both hands. He swept it from side to side, cutting down the three Chinese in a second. As the echoes died away, he looked at the ruins of the bridge.

“Now that’s what I call close.”